A half wave rectifer circuit is constracted using a p-n junction dode D load resistacne R and AC source as shown below

The current thourgh R varies as

Options

A.
B.
C.
D.

Explanation

for a half- wave rectifier ciruit diode D acts as closed circuit (with almost zero resistance ) for infinite resistance for the negative half cycle . So, no current flows during negative half cycle.
So the output is discontinous DC pulsating voltage as shown in figure (b) : Hence option (b) is correct.