The potential difference V and current I flowing through an instrument in an A.C circuit are given b

Question

The potential difference V and current I flowing through an instrument in an A.C circuit are given by $\mathrm{V}=5 \cos \omega \mathrm{t} \mathrm{V}$ and $\mathrm{I}=2 \sin \omega \mathrm{t} \mathrm{A}$. The power dissipated by the instrument is\

Professor PC Thomas Classes · Answer

Phase factor $=\pi / 2$\ $	herefore$ power factor $=0$\