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Solution


Q.

In a p-n junction diode, change in temperature due to heating               [2018]
1 affects only reverse resistance  
2 affects only forward resistance  
3 does not affect resistance of p-n junction  
4 affects the overall V-I characteristics of p-n junction.  

Ans.

(4)

Due to heating, number of electron-hole pairs will increase, so overall resistance of diode will change.

Due to which forward biasing and reversed biasing both are changed.