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An ac generator G with an adjustable fre...

An ac generator `G` with an adjustable frequency of oscillation is used in the circuit, as shown.

Average energy stored by the inductor `L_(2)` (source is at resonance frequency) is equal to

A

zero

B

`1.2 mJ`

C

`2.4 mJ`

D

`4 mJ`

Text Solution

Verified by Experts

The correct Answer is:
B
Average energy stored `= (1)/(2) Li_("rms")^(2)`
`= (1)/(2) (2.4 xx 10^(-3) H). (1A)^(2) = 1.2 mJ`
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