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An LR circuit with a battery is connect...

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 battery

D

emf induced in the inductor

Text Solution

Verified by Experts

The correct Answer is:
A, B, C
Initialy current `I=0, so U=1/2 Li^(2)=0`
`P=ei=0`
But initially `(di)/(dt) != 0`, so `e=L(di)/(dt) != 0`.
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