For an ideal Inductor, connected across a sinusoidal a.c. voltage source, state which one of the following quantity is zero: (i) instantaneous power, (ii) average power over full cycle of the a.c. voltage source.

For an ideal inductor connected across a sinusoidal A.C. voltage source, the average power over the full cycle is zero. This is because the voltage and current are out of phase by π/2, resulting in no net energy transfer.

For more visit here:
https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-7/