Question

The average value of alternating current over complete cycle is

• A. Zero
• B. $1rms$
• C. $\frac{I}{\sqrt{2}}$
• D. $2I$

Answer 1

The correct option is A Zero

Alternating current can be represented by $I=I_{o}sin\left(2\pi t/T\right)$

$I_{avg}={\int }_0^T{I}_0\sin \left(2\pi t/T\right)dt=0$