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1. Which of the following factors is the induced charge in an electromagnetic induction independent of?

a.Time
b.Resistance of the coil
c.Change of flux
d.None of the above
Answer: (a) Time

2. Which of the following states that an emf is induced whenever there is a change in the magnetic field linked with electric circuits?

a.Lenz’s Law
b.Ohm’s Law
c.Faraday’s Law of Electromagnetic Induction
d.None of the above
Answer: (c) Faraday’s Law of Electromagnetic Induction

3. Which of the following gives the polarity of the induced emf?

a.Biot-Savart Law
b.Lenz’s Law
c.Ampere’s circuital Law
d.Fleming’s right-hand Rule
Answer: (b) Lenz’s Law

4. Electrical Inertia is the measure of

a.Self Inductance
b.Mutual Inductance
c.Impedance
d.None of the above
Answer: (a) Self Inductance

5. Which of the following laws is the consequence of the Law of conservation of energy?

a.Lenz’s Law
b.Ohm’s Law
c.Archimedes Law
d.All of the above
Answer: (a) Lenz’s Law

6. Which of the following apparatus construction uses electromagnetic induction?

a.Voltmeter
b.Galvanometer
c.Generator
d.Electric Motor
Answer: (c) Generator

7. Which of the following factors is the self inductance associated with a coil is independent of?

a.induced voltage
b.current
c.time
d.coil resistance
Answer: (d) coil resistance

8. Which of the following rules is used to identify the direction of the current induced in a wire moving in a magnetic field?

a.Ampere’s Rule
b.Fleming’s Left-Hand Rule
c.Fleming’s Right-Hand Rule
d.None of the above
Answer: (b) Fleming’s Left-Hand Rule

9. Which of the following statements is true?

a.A metal plate can be heated by passing either a direct current or an alternating current through the plate.
b.A metal plate can be heated by placing it in a time-invariant magnetic field.
c.A metal plate can be heated by placing it in a time-variant magnetic field
d.Both (a) and (c)
Answer: (d) Both (a) and (c)

10. The induced emf is equal to the coefficient of self-inductance is equal to unity, when the rate of change of current is unity.

a.True
b.False
Answer: (a) True

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