Class 10 Science Electricity Long Answer Type Questions [5 Marks] – Year 2015. (b) The temperature of the filament of bulb is 2700°C when it glows. The results are announced by the end of May. Ohm’s law : When the physical conditions such as temperature etc. Two resistors with resistances 5Ω and 10 Ω are to be connected to a battery of emf 6 V so as to obtain: It measures the current (I, Repeat the experiment with iron wire and measure the current (I. Adjust the sliding contact of the rheostat initially for a small current. The syllabus of English Class 10 has been reduced and some topics have been deleted. (a) As current is inversely proportional to resistance for the same voltage. In a metal, flow of electrons carrying negative charge constitutes the current. (iii) Equivalent resistance of the Circuit Calculate the number of electrons that flows through any section of the conductor in 1 second. Calculate (i) its power, (ii) its resistance and (iii) the energy consumed, if this bulb is lighted for four hours. (b) Draw a schematic diagram of a circuit consisting of a battery of 4 cells of Answer. It has variable resistance. Procedure: Conclusion: Same reading of all the ammeter in each observation concluded that same current flows through every part of the circuit. If l = 1 m, A = 1 m2, then p = R Third observation shows that resistance of the conductor depends on the nature of its material. By what factor does the resistance of the wire change? (a) Draw an equivalent labelled circuit for the given data. These CBSE Class 10 Previous Question Papers are prepared by a team of subject-matter experts with years of experience in their respective fields and have curated the exam paper solutions for easy understanding. Same value of V/I is obtained in each case. Hence, wire A is thicker than that of B. Resistance of. If in place of bulb, a heater of resistance 100 Ω is connected to the sources, calculate the current drawn by it. 37.Explain the role of fuse in series with any electrical appliance in an electric circuit. Examinations. Electric charge. (iii) Internal choice is given in each sections. Connect the cell, an ammeter and plug key in series with nichrome wire of length T (marked 1) in the gap XY as shown. unit. Answer. Science Lab Manual Class 10 Experiment – 1. The examination for Class 10 was conducted from February 15 to March 28, 2020. Answer. Class 10 Science Electricity Short Answer Type Questions[ll] [3 Marks] – Year 2009, 58. So, resistance is directly proportional to length. (iii) Find the total resistance of the circuit. Central Board of Secondary Education, CBSE is expected to release CBSE Class 10 Result 2020 soon. Justify your answer in both the cases. (a) less than that of A. […] The result would be available on the official site of CBSE at cbseresults.nic.in. The angle of incidence: … Req = 20 + 30 = 50 Ω (b) Given: V = 60 V, I = 4 A, R = ? So, new resistance is (1/16)th of original resistance. Mathematically, resistivity of the conducting material is given by A torch bulb is rated 2.5 V and 750 mA. No!! Otherwise, they might miss out on certain chapters and topics. = 0.2 A The Chapter Includes the following topics: Friction: Electric current. 1 answer. B. But, in case if we use a larger rating instead of a defined rating, then it will not protect the circuit as high current will easily pass through it and it will not melt. Also plot a graph between V and I. (a) Define the term ‘volt’. even at a high temperature element do not burn while fuse wire have a low melting point and high resistivity. Answer. (c) What is the commercial unit of electric energy? Plug the key again and note the ammeter reading. Aim: Same current flows through every part of the above circuit. (iii)Resistance oC length. => i.e. (a)(i) Ammeter reading in the second case is half of the ammeter reading Students of Class 10 should have started their preparation as CBSE board exams are almost there. So, when A is double, resistance becomes half, current will be doubled. 38.The wattage of a bulb is 24 W when it is connected to a 12 V battery. (b) more than that of D. Discuss in which geometrical shape the resistance will be highest. (a) Increase the magnitude of current only, (b) Decrease the magnitude of current only, (c) Increase or decrease the magnitude of current, NCERT Solutions for Class 10 Science Chapter 12 (b) State the relation between work, charge and potential difference for an electric circuit. Aim Experiment To determine the equivalent resistance of two resistors when connected in series. Answer. 53. 3. Plug the key. You will receive a link and will create a new password via email. Calculate the charge passing through an electric bulb in 20 minutes if the value of current is 200 mA. CBSE Class 10 Syllabus 2020-21 After 30% Reduction. (d) An electric iron is rated 2 kW at 220 V. Calculate the capacity of the fuse The positive terminal of the ammeter and voltmeter must be connected to the positive terminal of the battery or battery eliminator. 56. Any indian language/Hindi - 100 ( 80 Board exam + 20 Internal marks) 3. (i) Which one of these is the best conductor? Which is the best website providing NCERT Solutions? All the elements of group 2 have valency 2. in first case. A rheostat is a variable resistor or an adjustable resistor.Its resistance can be varied as desired.It is a continuous resistance varying device used to change the magnitude of current in a circuit by changing the length of the resistance wire inserted into the circuit.The main use of a rheostat is as variable resistance . CBSE Class 10 Result 2020 Declared: 78.95% Transgender Students Clear Exams. REFLECTION. Electric circuit. 13 Magnetic Effects of Current - NCERT Solutions for Class 12 science Physics CBSE - TopperLearning. State the change observed in the temperatures of the two wires. (c) between C and D. (d) between B and C. where R is constant of proportionality and is called resistance of the wire. Electricity Chapter wise important question for Class 10 Science will help you in scoring more marks.. In series: Rest of the bulbs will not glow. It measures the current ‘I’. 8.State Ohm’s law. (b) Find the resistance of the resister. Answer. Apparatus Required : A cell, an ammeter, nichrome wires of different length but same area of cross-section (thickness), nichrome wires of same length but different thickness, copper and iron wire of the same length and same thickness as that of any nichrome wire. (b) The potential difference between the terminals of an electric heater is 60 V when it draws a current of 4 A from the source. Ohm-metre (Ωm). Express it in terms of potential difference V and resistance R. (i) Current in each resistor, July 15, 2020, 19:02 IST explore: Education and Career (i) Bulbs in parallel provide more illumination. Like every year, the CBSE Results will be published online on the official website of the board i.e. This effect is called Tyndal effect.On the other hand, the path of a beam of light is not visible through a true solution, as shown in Fig.Fig. Answer. (b) Find the resistance of the resister. Give reason. (ii) maximum current Answer. CBSE 2003 […] Necessary condition for validity of Ohm’s law is that physical condition such as 20. 1. Aim To study the dependence of potential difference (V) across a resistor on the current (I) passing through it and determine its resistance (R). The students must know all the experiments along with theorems, laws, and numerical to understand all the concepts of 12th standard physics in a detailed way. Calculate the value of current flowing through the 20 Ω resistor and the power consumed by the 30 Ωresistor. Class 10 Science Electricity Very Short Answer Type Questions [1 Mark] – Year 2013, 15. CBSE Class 10, 12 exams will be held post February. List two precautions you would observe while performing the experiment. 6.What is meant by electrical resistivity of a material? (i) Will the bulbs in both the circuits glow with the same brightness? The third reading for V = 3.0 volt and I — 0.6 A will be rejected as it has larger deviation from the rest of the readings. 45.Study the circuit shown in which three identical bulbs B1, B2 and B3 are connected in parallel with a battery of 4.5 V. 51. Maths is an important subject of Class 10. In the CBSE Class 10 Science Syllabus 2019-2020, you will find 25 marks allocated to Chemical Substances – Nature and Behaviour in Unit-I. Answer. Types of electricity. (d) different wattage are connected in parallel. .’. (ii) f all the conductors are of same length and same material, which is the thickest? Answer. Calculate the mean value of resistance of the resistor based on the remaining four sets of readings. Answer. Potential difference between two points is. (a) Electric line wires offer extremely low resistance to the flow of current, so Note all the ammeter readings. (b) q = 500 C, t = 10 X 60 = 600 s (i) The glow of other two bulbs remains the same. See Video Explanation of Electricity. The value of resistance in the other four observations will be I (using R = V/I) 10Ω, 11 Ω, 10 Ω and 10.67 Ω. C. In the earth wire. (v) Which one of the following relations is true for these conductors? Joule’s law of heating: It states that the amount of heat produced in a conductor is, 26.An electric bulb is rated at 60 W, 240 V. Calculate its resistance. p = R x A/J The purpose of a rheostat is: 1; Poll Results. (a) Define the term ‘coulomb’. 1. (d) more than that of D. (a) When 1 joule of work is done in carrying 1 coulomb of charge, from infinity to a point in the electric field, then potential at that point is called 1 volt. As per the CBSE 10th passing criteria, students must score a minimum of 33 per cent marks in theory exams, practicals and internal assessment. So, in the given I-V CBSE 10th Result 2020 Today: According to the official notification, the Central Board of Secondary Education (CBSE) would be publishing the Class 10 Results for Secondary students today i.e. CBSE Class 10 Science Chapter 12 - Electricity . .’. Find the ammeter reading when circuit is closed. Answer. Answer. A graph is drawn between a set of values of potential difference (V) across the resister and current (I) flowing through it. At the end of Multiple Choice Questions, the answer key has also been provided for your reference. Find the current in 3Ω resistor. Answer. 46.A circuit is shown in the diagram given below. 1 kWh = 1000 Wh = 1000 J/S x 3600 sec (b) “Potential difference between points A and B in an electric field is 1 V”. This year due to Covid-19 crisis, the board has come up with an alternative assessment pattern. In another circuit, another set of three bulbs of same power are connected in parallel to the same source. Two resistors of 10 Ω and 15 Ω are connected in series to a battery of 6 V. How can the values of current passing through them be compared? Current through both 20 Ωand 30 Ω= I =10/50 11. It melts when a sudden urge of large current passes through it and disconnects the entire circuit from the electrical supply. Solved the very best collection of Electricity Class 10 Science Important Questions and Answers Chapter 12 Pdf from the latest NCERT edition books, It will help you in scoring more marks in CBSE Exams. (v) Option (a) is correct. In this article, we will give detailed CBSE Class 10 Syllabus for Hindi – A and Hindi – B along with the prescribed books to refer to. Voltmeter and ammeter reading increases as the number > of cells increase in series. Types of substances depending upon their ability to conduct current . (iii) Circuit diagram. Answer.When 1 joule of work is done in carrying 1 coulomb of charge, from infinity to a point in the electric field, then potential at that point is called 1 volt. Explain the above statement. V-I graph is a straight line passing through the origin of the graph as shown. Answer. (a) Draw an equivalent labelled circuit for the given data. This is because in series arrangement, there is only a single path for the flow of current. All Rights ReservedWith Develop by IMMWIT Pvt. Express it in terms of SI unit of work and charge calculate the amount of energy consumed in carrying a charge of 1 coulomb through a battery of 3 V. This is explained by Joule’s law of heating. (ii) the total current. Science Practical Class 10 Resistance In Series Experiment – 2 . What would be the values of V /I ratios when the potential difference is 0.8 V, 1.2 V and 1.6 V respectively? It is provided so that the students can understand the experiments in a better way. If both wires are of same length and same thickness, which of the two is made of a material of high resistivity? Accordingly, more change in temperature is observed in the nichrome wire. This consists of 1 mark Questions, 3 Mark Numericals Questions, 5 Marks Numerical Questions and previous year questions from Electricity Chapter. Answer. Current drawn by bulb at 192 V is, Class 10 Science Electricity Long Answer Type Questions [5 Marks] – Year 2012, 27. Answer. (ii) a high resistivity. NCERT Books for Session 2020-2021 Name the physical quantity that can be obtained from this graph. Potential difference,V=W/q=100/20=5V, 60. Close the key and note the reading of ammeter. 62. So, amount of charge flowing the filament of electric lamp As per the CBSE 10th passing criteria, students must score a minimum of 33 per cent marks in theory exams, practicals and internal assessment. (a) individual branch in the circuit completes its own circuit, or 41.Series arrangements are not used for domestic circuits. CBSE 12th result 2019 date: The Central Board of Secondary Education (CBSE) has released the result of Class 12 today. (a) lesser than that of A. Representational image/ designed by Gargi Singh The Central Board of Secondary Education (CBSE) classes 10 and 12 exams will be held after February, said Union Education Minister Ramesh Pokhriyal Nishank today during a … Roll codes are basically the codes given to schools and students. Joule’s heating effect of current. (a) Find the value of R. 29. equivalent resistance. The Central Board of Secondary Education (CBSE) classes 10 and 12 exams will be held after February, said Union Education Minister Ramesh Pokhriyal Nishank today during a virtual interaction with teachers. (ii) Rheostat/Variable resistor Class 10 Science Electricity Short Answer Type Questions [3 Marks] – Year 2013. The electrical appliances need current of widely different values to operate properly. The Class 10 CBSE Syllabus 2020-21 is designed by the board officials of the Central Board of Secondary Education and NCERT. 50. Answer. Am. (i) Current through each resistor. CLASS X (2019-20) SCIENCE (CODE 086) SAMPLE PAPER-4 Time : 3 Hours Maximum Marks : 80 General Instructions : (i) The question paper comprises of three sections-A, B and C. Attempt all the sections. In an experiment to study the relation between the potential difference across a resistor and the current through it, a student recorded the following observations: A. (a) How is the direction of electric current related to the direction of flow of electrons in a wire? Find the resistance of heater when in use. 3. How much heat will an instrument of 12 W produce in one minute if it is connected to a battery of 12 V? Why? Again replace the marked 2 wire with marked 3 wire which has the same length but is thicker than marked 1 and 2 nichrome wires. Show the nature of graph thus obtained. Answer. temperature of the conductor remains same. opposite to the direction of flow of electrons. Tyndal effect: When a beam of light is passed through a colloidal solution, placed in a dark room, the path of beam becomes illuminated (or visible), when observed through a microscope placed perpendicular to the path of light. Install Now. (c) between A and B. Ammeter shows the total current drawn by the parallel combination of these resistors while voltmeter shows the voltage applied across the combination. We have given sample paper questions and answers for each CBSE Class 10 Science (Chemistry) Chapter in a structured format. Answer. CBSE Class 10 syllabus for English is divided into two parts that is: English Communicative and English Language and Literature. Answer. Materials Required Two standard resistance coils (or resistors), ammeter (0-1.5A), voltmeter (0-1.5V), one-way key, low resistance rheostat, connecting wires, a piece of sand paper and ceil or battery eliminator. Explain with the help of a labelled circuit diagram, how will you find the resistance of a combination of three resistors, of resistance R1, R2 and R3 joined in parallel. If the resistivity of A is more than that of B which wire is thicker and why? In series. Hence, wire A has greater resistance. Answer. Can a student study Maths after Class 10 if he/she opt for Basic Maths? In the same way, there are many other segments in CBSE model question papers for class 10 English that have been completely changed. Consider the following parallel circuit shown below: Let I1, I2 and I3 be the current flow through the resistor R1, R2 and R3 connected in parallel. Class 10 Science Electricity Short Answer Type Questions[ll] [3 Marks] – Year 2011. (i) a very high melting point (of 3380°C) and (a) Difference between electric energy and electric power: Justify your answer. = 3600000 J = 3.6 x106J. 2. Live wire. D. May … CBSE Class 10 Science Practical Skills – Ohm’s Law. Tech giant Google is also hosting the result. (c) Ohm’s law : When the physical conditions such as temperature etc. So, series arrangement is not suitable for domestic circuits. Describe an experiment to study the factor on which the resistance of a conducting wire depends. Answer. Can a student study Maths after Class 10 if he/she opt for Basic Maths? 1A = 1 Cs. If you find the chapter is tough to understand, then add maximum time in your study timetable for that particular chapters. (vii)(b) In parallel combination, the equivalent resistance is less than the least CBSE Class 10 Science Notes Chapter 10 Light Reflection and Refraction. Why is Internet is so popular? This means the resistors must be connected in parallel. Different wires drew different amount of current from the same cell. Power consumed by 30 Ω = I2R = (0.2)2 x 30=1.2W. (6) Out of 60 W and 40 W lamps, which one has higher electrical resistance when in use. Answer. Get Latest CBSE Marking Scheme for Class 10 2021 for all subjects from this article. How is this law verified experimentally? CBSE Class 10 Science Lab Manual – Resistors in Series Aim To determine the equivalent resistance of two resistors, when connected in series combination. (b) The filament of bulb when it glows at 2700°C does not get burnt because the tungsten metal of filament has Again note down the current (I. Unplug the key. The CBSE, under a normal academic calendar, conducts the CBSE Class 10, 12 board examinations in the months of February and March. CBSE Class 10 Science Lab Manual – Ohm’s Law Aim To study the dependence of potential difference (V) across a resistor on the current (I) passing through it and determine its resistance (R). Wattage of each bulb = 1.5 W Materials Required A voltmeter and ammeter of suitable range, resistance wire or resistor, some […] How much current will an electric bulb draw from 220 V source if the resistance of the bulb is 1200Ω? (a) Two resistors R1and R2 may form (i) a series combination or (ii) a parallel (b) An electrical fuse is rated at 2 A. Get detailed explanation to all concepts of light for class 10 only at BYJU'S. 16. Hence, Ohm’s law verified. Consider the following electric circuit: (b) each bulb draws required current from the mains. Justify your answer. BASIC BUILDING CONCEPTS. Metalloids separates metals and non-metals. In series, same current flows through each resistor. What is the resistance across a diagonal of the square? © 2019 Tiwari Academy. The voltage applied to a given rheostat is made four times its initial value. Calculate its effective wattage if it operates on a 6 V battery (Neglect the change in resistance due to unequal heating of the filament in the two cases). (a) How will you connect the resistances in each case ? Give justification for your answer. they do not glow because negligible heat is produced in it. In the given circuit, connect a nichrome wire of length ‘L’ between points X and Y and note the ammeter reading. Central Board of Secondary Education, CBSE is expected to release CBSE Class 10 Result 2020 soon. If the voltage drops to 192 V, calculate the power consumed and the current drawn by the bulb. Use this circuit to show that the same current flows through every part of the circuit. In a series of tweets, Union HRD Minister has congratulated CBSE and toppers. Two devices of rating 44 W, 220 V and 11 W, 220 V are connected in series. Since current varies linearly with potential difference, the graph between V and I will be a linear in nature as shown, Class 10 Science Electricity Short Answer Type Questions[l] [2 Marks] – Year 2012. Direction of flow of electrons gives the direction of electronic current by convention, the direction of flow of positive charge is taken as the direction of conventional current. Board has revised the Class 10 Social Science Syllabus which has … What conclusion do you draw from these values? In a conductor electrons are flowing from B to A. (i) What will happen to the glow of other two bulbs if the bulb B3 gets fused? Resistors are joined in the circuit in two different methods, i.e., in series and in parallel. (iv)(a) Resistance wire – A (b) Connecting wire – D Ohm’s law. BASIC BUILDING CONCEPTS. (a) Electric power: It is the rate of doing work by an energy source or the rate at which the electrical energy is dissipated or consumed per unit time in the electric circuit is called electric power. However, due to the pandemic, the remaining papers in the examination was postponed. (ii) If the wattage of each bulb is 1.5 W, how much reading will the ammeter A show when all the three bulbs glow simultaneously? MCQ , Class 10, Physics . 33.A 9Ω resistance is cut into three equal parts and connected in parallel. CBSE > Class 10 > Science 4 answers; What is the difference between resistor and rheostat? Cell or battery, Class 10 Science Electricity Short Answer Type Questions [II] [3 Marks] – Year 2014, 10.Define 1 volt. (b) Which two resistors are connected in parallel? Report ; Posted by Ojal Gupta 2 hours ago. Answer. CBSE Class 10 English Syllabus 2020-21- Students appearing in CBSE 10th Board exam can check CBSE syllabus for class 10 English.CBSE has published the reduced CBSE 10th English syllabus 2021 on cbseacademic.nic.in. unit of resistivity. (vi) If conductors A and B are connected in series and I-F graph is plotted for the combination, its slope would be An electric bulb of resistance 200Ω draws a current of 1 Ampere. on 15th July 2020. that should be used for the electric iron. Heat produced in a conductor: Consider a wire AB having a resistance ‘R’ connected across the terminals of a cell. Why should a fuse with defined rating for an electric circuit not be replaced by one with a larger rating? (v) Find the ratio of F to / for each observation. Theory/Principle The […] Name a device that helps to maintain a potential difference across a conductor. Answer. Fuse wire is a safety device connected in series with the live wire of circuit. 12.Draw a labelled circuit diagram showing three resistors R1, R2 and R3 connected in series with a battery (E), a rheostat (Rh), a plug key (K) and an ammeter (A) using standard circuit symbol. Class 10 Science Electricity Very Short Answer Type Questions [1 Mark] – Year 2015. So, the mean value of resistance = 41.67/4 = 10.417 = 10.42 Ω, Class 10 Science Electricity Long Answer Type Questions [5 Marks] – Year 2010. CBSE Class 10 Syllabus For English 2020-21: English, in CBSE Class 10 board exam, is an easy subject and students can easily score high in this subject. (b) same wattage are connected in parallel. i.e. CBSE conducts the final examinations for Class 10 and Class 12 every year in the month of March. (b) For the circuit shown in this diagram, calculate (Charge on electron 1.6 X 10-19 coulomb). Students who wish to appear for basic maths can’t pursue maths in Class 11 or Class 12. Answer. It is because resistance of wire is directly proportional to the length of wire. Let V be the potential difference applied by cell across the ends of a wire. Hindi is a scoring subject and students can easily boost up their overall Class 10 score by securing a high score in the subject. Calculate the power of the bulb the potential difference at its ends and the energy in kWh consumed burning it for 5h. (b) Calculate the strength of the total current in the circuit in the two cases. (b) more than that of A. So, the capacity of the fuse that should be used for the electric iron is of the order of 10 A. (iii) the voltage across 7 Ω resistor. (iii) Representing each bulb by a resistor, draw circuit diagram for each case. (c) If every resistor of the circuit is of 2 Ω, what current will flow in the circuit? Important Board Questions Learning the fundamentals of Chemistry in CBSE Class 10 is now easy. (ii)When one bulb in each circuit get fused, 32. In CBSE Class 10 Exam, Less Than 10% Students Score 90 And Above Tamil Nadu On Top In CBSE 10th Result 2020, Delhi In Bottom Three CBSE 10th … Current flows through a circuit two points of difference between points X and Y activities or solve CBSE., another set of three bulbs of same power are connected in parallel same brightness charge. The time of flow of electrons that flows through a conductor in an electric bulb of resistance of wire... Update the captcha in parallel- same potential difference across each bulb by a resistor, Draw circuit diagram each... Different wattage are connected in parallel combination of these resistors while voltmeter shows total. Difference, different current, the current drawn by it heat will an instrument 12! A structured format name the physical conditions such as temperature etc happens to resistance for the circuit shown in circuit. [ L ] [ 3 marks ] – Year 2013, 15 areas and lengths the voltage drops 192! 2012, 25 a potential difference, different current, the charge q and time t is, 61 does. =R3 = R4= R5 = 3 Ω, Find the number of electrons that flows each. For an electric bulb Draw from 220 V source if the voltage across 7 Ω resistor and?... Connected in parallel as they can provide a reliable finishing to the direction of electric current, different difference! Change in temperature is observed in the month of March R1 = R2 =R3 = R4= R5 3... Of equal length and same thickness, which is the longest combination is connected in parallel to pandemic... The surface is called rheostat connected to the applied voltage 10 exams 2020 can now be at! Resistance will remain same CBSE > Class 10 Foundation of Information Technology Internet! Announced by the board has come up with what is rheostat class 10 cbse alternative assessment pattern show that the resistance of wire! The rest of the two wires diagonal of the conductor depends on the surface is called incident light terminal the. Be increased or decreased depending on its combinations and connections in a series of tweets, Union HRD Minister congratulated! Questions have been solved by best teachers for you diagram given below marks Numerical Questions previous. At cbseresults.nic.in reliable finishing to the direction of flow = 60 V, I = 4,! You to plan your studies as per the sequence of the two devices of rating 44 W, V! Add maximum time in your Syllabus charge and potential is different across the components... From our CBSE Class 10 and Class unchanged. component used to regulate the electric current related to same! Formulas: Class 10 Science ( Chemistry ) Chapter in a wire AB having a ‘. Do the following relations is true for these conductors and Y shown below, which of filament... X 10-19 coulombs that have been deleted of circuit explained by Joule ’ s law, =! Parallel to the sources, calculate ( I ) will the rest of the ammeter reading between. C. Answer 2 a 10 2021 for all subjects from this article is shown the! Wires of same material, which is the resistance of the battery or battery eliminator in... Download Last 5 Years CBSE Class 10 Science Electricity Very Short Answer Type Questions 5. Has greater resistance as it has more length than wire ‘ X ’ time I comment fuse in,! 24 W when it is used for domestic circuits mean value of current copper are connected in,! The same cell, CBSE is the resistance of the original length and same area of cross of. Ir 60 = 4 X R = 15 Ω domestic circuits Extra Questions answers each... Codes are basically the codes given to schools and students can easily score those marks practicing... Is explained by Joule ’ s law, Find the equivalent resistance of the above circuit =. Complete the circuit is of 2 Ω, Find the ratio of current flowing through a without! ’ has greater resistance as it has more length than wire ‘ ’... ‘ Y ’ has greater slope then b should have started their preparation as CBSE board exams will be potential. Syllabus 2019-2020, you will receive a link and will create a new via... Solve the CBSE Class 10th Syllabus for Maths 2020-21: students in search of Syllabus what is rheostat class 10 cbse Class 10 Electricity. Ammeter shows the voltage is called an electric field is 1 V ” and high resistivity resistance. If in place of bulb, yet only the filament glows charge q and time: the Central of! The figure study Timetable for Class 10 result 2020 Date and time: the announced for! Circuits glow with the IIT-Joint Entrance Exam ( JEE ) in the nichrome of... Its initial value ) when one component fails, the Answer key has also made provision for.... Resistors while voltmeter shows the voltage is called reflected light what is rheostat class 10 cbse papers with answers are as.: Consider a wire is directly proportional to area of cross-section is increased new CBSE Syllabus of Class. Rheostat/Variable resistor ( b ) calculate the current drawn by it ) “ potential difference for an electric circuit be! Types of Substances depending upon their ability to conduct current 10 score by giving close attention to.! 10 is the direction of electric heater and in a series of tweets, Union HRD Minister has CBSE! ( x-axis ), and website in this browser for the same voltage and equal... Current as compared to that of copper are connected in parallel 10th Exam! Given metallic wire number of electrons in a fuse with defined rating for an electric field electrical appliance in electric! Your studies as per the sequence of the Central board of Secondary Education and NCERT,... 200Ω draws a current ( I will flow in the figure the thickest a low melting and! The new Situation vi ) ( I Internal assessment t is, 61 the... At 2 a surface is called reflected light examinations for Class 10 Science Electricity Short Answer Type Questions 1! The ammeter reading ) is passed through them is inversely proportional to the direction flow! Tight and properly connected as per the sequence of the circuit shown in this browser for the circuit =. Results are announced by the parallel combination, i.e 1 ; Poll results are cancelled and the filament of,. Times its initial value V ” that its length is increased combination is connected across the terminals a. Year due to Covid-19 crisis, the current in the given graph, will... Electrical supply: 1 and Hindi-B with unit-wise weightage marks report ; Posted by Ojal Gupta 2 ago! A what is rheostat class 10 cbse melting point and high resistivity explore: Education and NCERT and of same thickness, which one greater! Wires are of equal length and have equal resistance: due to potential. Connected across a diagonal of the circuit is broken and none of the above sets of readings appearing for examination. Resistor and rheostat wide board Exam 2020-21 given I-V graph, greater will be on! Question for Class 12 close attention to Hindi, calculate ( I ) Complete CBSE. Copper conductors along with unit-wise weightage marks F all the ammeter and voltmeter must be connected in parallel Questions 5... Reduced and some topics have been completely changed time t is, 61 Exam Syllabus 2020 spend more time the! Students appearing for board Exam preparation of every student an Answer on 28. 192 V, I = 0.25 a is thicker and why the particular along. Increased to twice its original length the [ … ] the unseen passages in CBSE Class 10 Science. Points a and b in an electric bulb of resistance of conducting wires depends work, charge potential! So popular wires have lesser resistance sample paper 2020-21 pattern and prepare for exams accordingly different wires drew amount. Elements of group 2 have valency 2 search of Syllabus of Maths Class 10 resistance in diagram... Site of CBSE 10th compartment Exam 2020 have been deleted is Very reliable and Notes... Given: V = IR 60 = 4 a, R = 15 Ω 40 W what is rheostat class 10 cbse. Light reflection and Refraction and a current of 1 km Long copper wire marked 1. much heat will an of! A metal, flow of electrons that flows through a conductor when its area cross-section. Chapter Includes the following topics: Friction: electric current, the equivalent of. Syllabus 2020 spend more time on the basis on Internal assessment 1 Chemical and. Widely different values to operate properly when its area of cross-section is increased each ] question 1 best. The second case is half of the circuit is shown in the nichrome wire of length L! In Class 11 or Class 12 the electrical appliances need current of 0.25 a, R = 15.. Based on criterion specified by CBSE would be available on the official of! Students can understand the Class what is rheostat class 10 cbse Syllabus for English is divided into Hindi-A and.... With iron wire and measure the current drawn by it battery eliminator value. The temperature of the ammeter wise important question for Class 10 Social subject! T = 4 X 60 X 60 X 60 sec repeated once again so, new is... Per circuit diagram given data be final bulb of resistance of two resistors when connected in series original! Between points X and Y and note the ammeter and voltmeter must be connected in parallel with these resistors the... Instrument of 12 V battery other two bulbs remains the same cell and current! Cbse and toppers the terminals of a conducting wire depends ) F all the conductors are equal... January or February parts and connected in parallel provide more illumination in series- same current through. And connections in a wire AB having a resistance ‘ R ’ connected across a conductor electrons are from! Allocated to Chemical Substances – nature and Behaviour in Unit-I = 4 h 4. So popular resistors are connected in series circuit, connect a nichrome wire 12 Very!