Electromagnetic Induction MCQ Test - Willer Academy

Electromagnetic Induction MCQ Test

Class 12 Physics - Section A

Instructions: This test contains 20 multiple-choice questions. Select the best answer for each question. After completing all questions, click "Submit Answers" to see your score and feedback.

Time: Approximately 30 minutes

1. Who discovered electromagnetic induction?
2. According to Faraday's law, the induced emf in a circuit is directly proportional to:
3. Lenz's law is a consequence of the law of conservation of:
4. The SI unit of magnetic flux is:
5. The phenomenon of producing an induced emf in a circuit due to change in current in the same circuit is called:
6. The direction of induced current is such that it opposes the change which has produced it. This is the statement of:
7. The SI unit of self-inductance is:
8. A metal plate is allowed to swing between the poles of a strong magnet. The plate will:
9. The magnetic flux through a coil is given by Φ = (2t² + 3t + 5) Wb. The magnitude of induced emf at t = 2s is:
10. A rectangular loop of area A is placed in a uniform magnetic field B. The flux through the loop is maximum when the angle between the field and normal to the loop is:
11. The induced emf in a coil of 200 turns is 5 V. The rate of change of flux through the coil is:
12. A conducting rod of length l moves with velocity v perpendicular to a uniform magnetic field B. The induced emf across the rod is:
13. The time constant of an L-R circuit is given by:
14. The energy stored in an inductor of inductance L carrying current I is:
15. In a transformer, the core is laminated to reduce:
16. Two coils have mutual inductance of 1.5 H. If the current in the primary changes from 0 to 10 A in 0.2 s, the induced emf in the secondary is:
17. The self-inductance of a solenoid depends on:
18. Which of the following does not involve electromagnetic induction?
19. A metal ring is held horizontally and a bar magnet is dropped through the ring with its length along the axis of the ring. The acceleration of the falling magnet is:
20. The coefficient of mutual induction between two coils depends on:
Your Score: 0/20

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