Electromagnetic Induction

CBSE Class 12 · Physics · 15 past questions

1. Q1 2026

   The magnetic flux $\phi$ (in Wb) linked with a coil is related to time t (in s) as…

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2. Q2 2026

   A magnet held vertically, with its north pole down is dropped along the axis of a closed solenoid placed…

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3. Q3 2026

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4. Q4 2025

   A coil has 100 turns, each of area 0.05 m² and total resistance 1.5 Ω. It is inserted at an instant in a…

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5. Q5 2025

   You are required to design an air-filled solenoid of inductance 0.016 H having a length 0.81 m and radius…

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6. Q6 2025

   Assertion (A) : It is difficult to move a magnet into a coil of large number of turns when the circuit of the…

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7. Q7 2025

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8. Q8 2024

   The current in a coil of 15 mH increases uniformly from zero to 4 A in 0.004 s. The emf induced in the coil…

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9. Q9 2024

   Consider a solenoid of length $l$ and area of cross-section A with fixed number of turns. The self-inductance…

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10. Q10 2024

    Questions number 13 to 16 are Assertion (A) and Reason (R) type questions. Two statements are given — one…

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11. Q11 2024

    A circular coil of radius 10 cm is placed in a magnetic field…

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12. Q12 2024

    Questions number 13 to 16 are Assertion (A) and Reason (R) type questions. Two statements are given — one…

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13. Q13 2024

    A 100-turn coil of radius 1·6 cm and resistance 5·0 Ω is co-axial with a solenoid of 250 turns/cm and radius…

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14. Q14 2023

    A circular coil of radius 8.0 cm and 40 turns is rotated about its vertical diameter with an angular speed of…

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15. Q15 2023

    A long solenoid of radius r consists of n turns per unit length. A current $I = I_0 \sin \omega t$ flows in…

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