Question

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`

Answer 1

Correct Answer - B
Average energy stored =`1/2Li_(rms)^(2)`
`=1/2(2.4xx10^(-3)H).(1A)^(2)=1.2 mJ`