Choose the correct circuit for the forward bias of p-n junction diode:

Choose the correct answer from the options given below:

(D) only

The correct answer is Option (4) → (D) only

In the given circuit (D) :

The p-side of the diode is connected to the positive terminal of the battery.

The n-side of the diode is connected to the negative terminal of the battery through the resistor $R$.

This is the condition of forward biasing of a p–n junction diode.