The potential differences `V` and the current `i` flowing through an instrument in an `AC` circuit
Channel: Doubtnut
Date: 2020-01-19

The potential differences `V` and the current `i` flowing through an instrument in an `AC` circuit of frequency `f` are given by `V=5 cos omega t` and `I=2 sin omega t` amperes (where `omega=2 pi f`). The power dissipated in the instrument is