What is the average power transferred to the circuit in one complete cycle?

A series L-C-R circuit with R = 20 Ω, L = 1.5H and C= 35 µF is connected to a variable frequency of 200 V AC supply. When the frequency of the supply equals the natural frequency of the circuit, what is the average power transferred to the circuit in one complete cycle?

When the frequency of the supply equals the natural frequency of the circuit, resonance occurs.
{ Z }_{ r } = R = 20 Ω
{ I }_{ rms } =
{ V}_{ rms } /
{ Z }_{ r } = 200/20 = 10 A
Average power transferred in one cycle