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Electromagnetic Induction — Prelims Questions

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Version 1Updated 9 Mar 2026

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Q1medium

Which of the following statements about electromagnetic induction is/are correct? 1. The magnitude of induced EMF is directly proportional to the rate of change of magnetic flux. 2. Lenz's Law is a consequence of the conservation of momentum. 3. Eddy currents are always undesirable in all applications. Select the correct answer using the code given below:

Q2easy

An electric generator works on the principle of:

Q3medium

Consider the following applications: 1. Induction cooktops 2. Metal detectors 3. Electromagnetic braking in trains 4. Wireless charging of smartphones Which of the above applications utilize the principle of electromagnetic induction?

Q4hard

A step-up transformer increases the AC voltage. Which of the following statements about a step-up transformer is correct?

Q5medium

Which of the following factors does NOT affect the magnitude of the induced EMF in a coil?