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Electromagnetic Induction

MHT-CET Physics. Try each one first, then open its answer.

Top 10 MHT-CET 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

    Asked 12 times: 4 May 2023 S2*, 10 May 2023 S2*, 10 May 2024 S1, 10 May 2024 S2*, 11 May 2024 S1*, 19 Apr 2025 S1, 20 Apr 2025 S1*, 15 Apr 2026 S2*, 16 Apr 2026 S2, 17 Apr 2026 S2*, 12 May 2026 S1*, 19 May 2026 S2 (* = numbers or wording changed that year) See all 12 times it was asked

    135
    Two conducting circular loops of radii r1r_1 and r2r_2 are placed in the same plane with their centres coinciding. If r1>>r2r_1 >> r_2, then the mutual inductance MM between them is proportional to [I1=I_1 = current flowing through coil 1 and I2=I_2 = current flowing through coil 2]

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  2. Question 2

    This type asked 12 times: 2 May 2023 S1, 9 May 2023 S2, 10 May 2023 S1, 10 May 2023 S2, 10 May 2024 S2, 12 May 2024 S1, 19 Apr 2025 S1, 26 Apr 2025 S1, 18 Apr 2026 S1, 18 Apr 2026 S2, 19 Apr 2026 S2, 14 May 2026 S2. This one: 14 May 2026 S2 See all 12 of this type

    134
    The self induced e.m.f. of a coil is 2525 V. When the current in it is changed at uniform rate from 1010 A to 2525 A in 11 s, the change in the energy of the inductance is

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  3. Question 3

    This type asked 11 times: 2 May 2023 S2, 11 May 2023 S1, 11 May 2023 S2, 15 May 2023 S1, 15 May 2023 S2, 16 May 2023 S2, 21 Apr 2025 S2, 25 Apr 2025 S2, 15 Apr 2026 S2, 13 May 2026 S1, 13 May 2026 S2. This one: 13 May 2026 S2 See all 11 of this type

    135
    A coil of wire of radius rr has 600600 turns and a self-inductance of 108108 mH. The self inductance of a coil with same radius and 500500 turns is

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  4. Question 4

    This type asked 10 times: 10 May 2023 S2, 11 May 2023 S2, 13 May 2024 S2, 20 Apr 2025 S2, 23 Apr 2025 S1, 11 Apr 2026 S2, 16 Apr 2026 S1, 17 Apr 2026 S1, 20 Apr 2026 S2, 19 May 2026 S1. This one: 19 May 2026 S1 See all 10 of this type

    139
    A transformer having an efficiency 80% is working on 200200 V and 44 kW power supply. If the current in the secondary coil is 55 A, the voltage across the secondary coil and the current in the primary coil, respectively, are

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  5. Question 5

    This type asked 10 times: 9 May 2023 S1, 10 May 2023 S1, 15 May 2023 S1, 9 May 2024 S2, 12 May 2024 S1, 11 Apr 2026 S2, 13 Apr 2026 S1, 16 Apr 2026 S2, 18 Apr 2026 S1, 14 May 2026 S1. This one: 14 May 2026 S1 See all 10 of this type

    135
    A current i=10sin⁡(100πt)i = 10\sin(100\pi t) A is passed in first coil, which induces a maximum e.m.f. 5π5\pi V in second coil. The mutual inductance between the coils is

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  6. Question 6

    This type asked 9 times: 4 May 2023 S2, 11 May 2024 S2, 14 May 2024 S1, 14 May 2024 S2, 19 Apr 2025 S2, 26 Apr 2025 S1, 13 Apr 2026 S2, 20 Apr 2026 S1, 12 May 2026 S2. This one: 12 May 2026 S2 See all 9 of this type

    136
    The coil of area 0.10.1 m2^2 has 10001000 turns. It is placed in a magnetic field of strength 5×10−45 \times 10^{-4} T. The average e.m.f. induced in the coil, if rotated through 1800180^0 in 0.10.1 s is (cos⁡0∘=1,cos⁡180∘=−1)(\cos 0^\circ = 1, \cos 180^\circ = -1)

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  7. Question 7

    This type asked 7 times: May 2022 S1, 9 May 2023 S1, 11 May 2024 S2, 22 Apr 2025 S1, 12 May 2026 S2, 13 May 2026 S1, 19 May 2026 S1. This one: 19 May 2026 S1 See all 7 of this type

    134
    The magnetic flux through a coil of resistance 'RR' changes by an amount Δϕ\Delta\phi in the time Δt\Delta t. The total quantity of induced current and charge is respectively

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  8. Question 8

    This type asked 7 times: May 2022 S1, 9 May 2024 S1, 11 May 2024 S2, 12 May 2024 S2, 14 May 2024 S2, 14 May 2026 S1, 15 May 2026 S2. This one: 15 May 2026 S2 See all 7 of this type

    136
    The inductance of a coil is proportional to

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  9. Question 9

    This type asked 7 times: May 2022 S1, 4 May 2023 S1, 16 May 2023 S1, 10 May 2024 S1, 22 Apr 2025 S2, 26 Apr 2025 S2, 16 Apr 2026 S2. This one: 16 Apr 2026 S2 See all 7 of this type

    135
    A graph of magnetic flux (Φ\Phi) versus current (I) is shown for four inductors A, B, C, D. The smallest value of self inductance is for inductor.

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  10. Question 10

    This type asked 6 times: 2 May 2023 S1, 3 May 2023 S2, 9 May 2023 S1, 15 May 2023 S2, 13 May 2024 S2, 14 May 2026 S1. This one: 14 May 2026 S1 See all 6 of this type

    134
    A conductor of length 11 m rotates vertically about one of its ends at angular velocity 55 rad/s. If the horizontal component of earth's magnetic field is 0.2×10−40.2 \times 10^{-4} T, then the e.m.f. developed between the ends of the conductor is

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