PYQ Vault
EbooksTutor

Current Electricity

JEE Mains Physics. Try each one first, then open its answer.

Top 10 JEE Mains PYQs to practise first

The questions and kinds of question asked most often come first. Each one says how often and in which papers.

  1. Question 1

    This type asked 9 times: 2021 Paper 26, 25 Jun 2022, 26 Jun 2022, 28 Jul 2022, 24 Jan 2023, 25 Jan 2023, 12 Apr 2023, 4 Apr 2024, 6 Apr 2024. This one: 6 Apr 2024 See all 9 of this type

    26
    A wire of resistance RR and radius rr is stretched till its radius became r/2r/2. If new resistance of the stretched wire is xRxR, then value of xx is _____

  2. Question 2

    This type asked 7 times: 2021 Paper 17, 28 Jun 2022, 12 Apr 2023, 30 Jan 2024, 4 Apr 2024, 8 Apr 2024, 9 Apr 2024. This one: 9 Apr 2024 See all 7 of this type

    120
    At room temperature (27∘C)\left( 27^{\circ}C \right), the resistance of a heating element is 50Ω50\Omega. The temperature coefficient of the material is 2.4×10−4 ∘C−12.4 \times10^{- 4}\ ^{\circ}C^{- 1}. The temperature of the element, when its resistance is 62Ω62\Omega, is _______  ∘C\ ^{\circ}C.

  3. Question 3

    This type asked 6 times: 26 Jul 2022, 29 Jan 2023, 1 Feb 2024, 22 Jan 2026 S1, 24 Jan 2026 S1, 24 Jan 2026 S2. This one: 24 Jan 2026 S2 See all 6 of this type

    23
    In a meter bridge experiment to determine the value of unknown resistance, first the resistances 2Ω2\Omega and 3Ω3\Omega are connected in the left and right gaps of the bridge and the null point is obtained at a distance l cml\text{ }cm from the left. Now when an unknown resistance xΩx\Omega is connected in parallel to 3Ω3\Omega resistance, the null point is shifted by 10 cm to the right of wire. The value of unknown resistance x is ____\_\_\_\_ Ω\Omega.

  4. Question 4

    This type asked 5 times: 29 Jun 2022, 24 Jan 2023, 6 Apr 2023, 30 Jan 2024, 24 Jan 2026 S1. This one: 24 Jan 2026 S1 See all 5 of this type

    5
    Two resistors of 100Ω100\Omega each are connected in series with a 9 V battery. A voltmeter of 400Ω400\Omega resistance is connected to measure the voltage drop across one of the resistors. The voltmeter reading is ____\_\_\_\_ V.

    Tap an option to check your answer.

  5. Question 5

    Asked 4 times: 2021 Paper 20*, 29 Jun 2022*, 31 Jan 2023*, 28 Jan 2026 S1 (* = numbers or wording changed that year) See all 4 times it was asked

    13
    For the two cells having same EMF E and internal resistance rr, the current passing through the external resistor 6Ω6\Omega is same when both the cells are connected either in parallel or in series. The value of internal resistance rr is ____\_\_\_\_ Ω\Omega

    Tap an option to check your answer.

  6. Question 6

    This type asked 4 times: 25 Jan 2023, 30 Jan 2024, 3 Apr 2025, 6 Apr 2026 S2. This one: 6 Apr 2026 S2 See all 4 of this type

    24
    Two cells of emfs 1 V and 2 V and internal resistance 2Ω2\Omega and 1Ω1\Omega, respectively connected in parallel, gave current of 1A through an external resistance. If the polarity of one cell is reversed, then value of current through the external resistance will be α5 A\frac{\alpha}{5}\text{ }A. The value of α\alpha is ____\_\_\_\_ .

  7. Question 7

    This type asked 4 times: 2021 Paper 13, 14 Jun 2022, 11 Apr 2023, 5 Apr 2026 S2. This one: 5 Apr 2026 S2 See all 4 of this type

    24
    When an external resistance of 5Ω5\Omega is connected across terminals of a cell, a current of 0.25 A flows through it. When the 5Ω5\Omega resistor is replaced by a 2Ω2\Omega resistor, a current of 0.5 A flows through it. The internal resistance of the cell is ____\_\_\_\_ Ω\Omega.

  8. Question 8

    This type asked 4 times: 27 Jun 2022, 29 Jan 2023, 4 Apr 2024, 28 Jan 2026 S1. This one: 28 Jan 2026 S1 See all 4 of this type

    3
    In the potentiometer, when the cell in the secondary circuit is shunted with 4Ω4\Omega resistance, the balance is obtained at the length 120 cm of wire. Now when the same cell in shunted with 12Ω12\Omega resistance, the balance is shifted to a length of 180 cm . The internal resistance of cell is ____\_\_\_\_ Ω\Omega.

    Tap an option to check your answer.

  9. Question 9

    This type asked 4 times: 2021 Paper 1, 29 Jan 2024, 1 Feb 2024, 4 Apr 2025. This one: 4 Apr 2025 See all 4 of this type

    13
    Current passing through a wire as function of time is given as I(t)=0.02t+I\left( t \right)= 0.02t + 0.01 A0.01\text{ }A. The charge that will flow through the wire from t=1 st= 1\text{ }s to t=2 st= 2\text{ }s is :

    Tap an option to check your answer.

  10. Question 10

    This type asked 4 times: 2021 Paper 22, 1 Feb 2023, 24 Jan 2025, 28 Jan 2025. This one: 28 Jan 2025 See all 4 of this type

    15
    A wire of resistance RR is bent into an equilateral triangle and an identical wire is bent into a square. The ratio of resistance between the two end points of an edge of the triangle to that of the square is

    Tap an option to check your answer.