Question

In an a.c. circuit the voltage applied is E = E₀ sinωt. The resulting current in the circuit is I = I₀sin(ωt - π/2). The power consumption in the circuit is given by

(a) P = √2E₀I₀

(b) P = (E₀I₀)/√2

(c) =zero

(d) = (E₀I₀)/2 

Answer 1

Correct Option(c) =zero

Explanation:

For given circuit, current is lagging the voltage by π/2, so the circuit is purely inductive and there is no power consumption in the circuit The work-done by the battery is stored as magnetic energy in the inductor.