alleryIn AC circuit with only inductor, average power consumed over one full cycle:
AV_rms × I_rms
BMaximum
CV × I / 2
DZERO (purely reactive, current and voltage 90° out of phase)
Answer & Solution
Correct answer: D. ZERO (purely reactive, current and voltage 90° out of phase)
For pure L (or pure C), cos φ = 0 (90° phase shift)
so P_avg = V_rms I_rms cos φ = 0. Energy oscillates in and out of the field per cycle — no net dissipation.
Called 'wattless current'.
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