Question 183: Electromagnetic Induction

Question

The current in a coil of self inductance 2.0 H is increasing according to I = 2 sin(t2) A. The amount of energy spent during the period when current changes from 0 to 2 A is ____________ J.

Accepted Answer

$$U = {1 \over 2}L{I^2}$$
$$ = {1 \over 2}2 	imes {2^2} = 4$$ J

Electromagnetic Induction

The current in a coil of self inductance 2.0 H is increasing according to I = 2 sin(t2) A. The amount of energy spent during the period when current changes from 0 to 2 A is ____________ J.

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