The line the draws power supply to your house from street has

Options

A. `220sqrt(2)V` average voltage.
B. 220 V average voltage.
C. Voltage and current out of phase by `pi//2`.
D. Voltage and current possibly differing in phase`phi`such that `|phi|lt (pi)/(2)`.

Answer

D

Explanation

As the line has some resistance `(R ne 0)`, voltage and current differ in phase `phi` such that `|phi| lt (pi)/(2)`.