Question

A sinusoidal voltage of peak value $200$ volt is connected to a diode and resistor $R$ in the circuit shown so that half wave rectification occurs. If the forward resistance of the diode is negligible compared to $R$, the rms voltage (in volt) across $R$ is approximately

• A. $200$
• B. $100$
• C. $\frac{200}{\sqrt{2}}$
• D. $280$

Answer 1

Answer: (B)

$V_{rms}=\frac{V_0}{2}=\frac{200}{2}=100V$