Question

Two identical p-n junction may be connected in series with a battery in three ways as shown in the, adjoining figure. The potential drop across the p-n junctions are equal in

• A. First and second circuits
• B. Second and third circuits
• C. Third and third circuits
• D. All of these.

Answer 1

The correct option is A First and second circuits

In case (i) and (ii) P is connected to positive terminal of supply and N is connected to negative terminal of supply hence diode is forward biased it means diode is in conduction

N is connected to positive terminal of supply and P is connected to negative terminal of supply hence diode is Reverse biased hence no conduction is seen