Home Physics Electromagnetic Induction Self Induction, Emf, Induced Current An LR circuit with a battery is connected at…
Physics Electromagnetic Induction Self Induction, Emf, Induced Current MCQ (Single Correct)

An LR circuit with a battery is connected at t = 0. Which of the following quantities is not zero just after the connection?

A
current in the circuit
B
magnetic field energy in the inductor
C
power delivered by the battery
D
emf induced in the inductor

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The correct answer is:
D

When just after battery is connected, current is zero in the circuit, and hence will follow magnetic field energy and power delivered is also zero. EMF induced is . Hence there is a finite value.

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