A reverse biased PN junction has a resistance________

A reverse biased PN junction has a resistance________

Right Answer is:

Of the order of MΩ

SOLUTION

An ideal diode should offer zero resistance in forward bias and infinite resistance in reverse bias. But in practice no diode can act as an ideal diode, i.e. an actual diode does not behave as a perfect conductor when forward biased and as a perfect insulator when reverse biased. 

Reverse resistance: It is the resistance offered by the PN junction diode under reverse bias conditions. It is very large compared to the forward resistance, which is in the range of several MΩ.

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