Draw V-I characteristics of a p-n junction diode. Answer the following questions, giving reasons : (i) Why is the current under reverse bias almost independent of the applied potential upto a critical voltage? (ii) Why does the reverse current show a sudden increase at the critical voltage? Name any semiconductor device which operates under the reverse bias in the breakdown region.

Draw V-I characteristics of a p-n junction diode. Answer the following

1.	Draw V-I characteristics of a p-n junction diode. Answer the following questions, giving reasons : (i) Why is the current under reverse bias almost independent of the applied potential upto a critical voltage? (ii) Why does the reverse current show a sudden increase at the critical voltage? Name any semiconductor device which operates under the reverse bias in the breakdown region.
Answer» Draw V-I characteristics of a p-n junction diode. Answer the following questions, giving reasons : (i) Why is the current under reverse bias almost independent of the applied potential upto a critical voltage? (ii) Why does the reverse current show a sudden increase at the critical voltage? Name any semiconductor device which operates under the reverse bias in the breakdown region.

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