NEET 2003 Physics question

Not in JEE Advanced syllabus

Reverse bias applied to a junction diode

(1)Lowers the potential barrier
(2)raises the potential barrierCorrect
(3)increases the majority carrier current
(4)increases the minority carrier current

Answer: (2)

Solution

In reverse bias the external battery's positive terminal is joined to the n-side and the negative terminal to the p-side. This pulls majority carriers away from the junction, widens the depletion layer and raises the potential barrier (height becomes ).

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Question ID VK-089173