question_answer

An alternating voltage \[V={{V}_{0}}\sin \,\omega t\] is applied across a circuit. As a result, the current \[l={{l}_{0}}\sin \,(\omega t-\pi /2)\] flows in it. The power consumed in the circuit per cycle is:

A) \[0.5\,{{V}_{0}}{{l}_{0}}W\]               

B) \[0.707\,{{V}_{0}}{{l}_{0}}W\]

C) \[1.919\,{{V}_{0}}{{l}_{0}}W\]                       

D) zero