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Solution


Q.

In the given circuits a), b) and c), the potential drop across the two p-n junctions are equal in:             [2022]
1 Circuit a) only  
2 Circuit b) only  
3 Circuit c) only  
4 Both circuits a) and c)  

Ans.

(4)

The potential drop across p-n junction diode is equal when either both are in forward biased or reversed biased. So, in circuits (1) and (3) both are in forward biased.
So, correct option is (4).