Question

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

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

Answer 1

The correct option is B $100$

The output r.m.s. voltage in a half wave rectifier
circuit is $V_{rms}=V_0/2=200/2=100V$