In an ac circuit, the voltage applied is $E=E_0 \sin \omega$. The resulting current in the circuit i

Question

In an ac circuit, the voltage applied is $E=E_0 \sin \omega$. The resulting current in the circuit is $I=I_0 \sin \left(\omega t-\frac{\pi}{2}\right)$. The power consumption in the circuit is given by

Professor PC Thomas Classes · Answer

$P = E_{	ext{rms}} I_{	ext{rms}} \cos(\phi)$. Phase difference is $\pi/2 \Rightarrow \cos(\pi/2)=0 \Rightarrow P=0$. [FLAG: correct is C, CSV says A]