Question

The rms value of a half wave rectified symmetrical square wave current of 2 A is

• A. $\sqrt{2}$ A
• B. 1 A
• C. $\frac{1}{\sqrt{2}}$ A
• D. $\sqrt{3}$ A

Answer 1

The correct option is A $\sqrt{2}$ A

To find: RMS value of i(t)

We have,



$I_{rms}=\sqrt{\frac{1}{T}{\int }_0^T{i}^2\left(t\right)dt}$
$=\sqrt{\frac{1}{T}\times 4\times \frac{T}{2}}=\sqrt{2}A$