The output of the given circuit in figure given below,

Options

A. Would be zero at all times
B. Would be like a half wave rectifier with positive cycles in output
C. Would be like a half wave rectifier with negative cycles in output
D. Would be like that of a full wave rectifier

Answer

C

Explanation

Due to forward bias during positive half cycle of input AC voltage, the resistance of p-n junction is low. The current in the circuit is maximum. In this situation, a maximum potential difference will appear across resistance connected in series of circuit. This result into zero output voltage across p-n junction.
Due to reverse bias during negative half cycle of AC voltage, the p-n junction is reverse biased. The resistance of p-n junction becomes high which will be more than resistance in series. That is why, there will be voltage across p-n junction with negative cycle in output.