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Question

On increasing reverse voltage in a p-n junction diode, the value of reverse current will
  1. gradually increase.
  2. first remain constant and then suddenly increase.
  3. remain constant.
  4. gradually decrease.

A
gradually increase.
B
first remain constant and then suddenly increase.
C
gradually decrease.
D
remain constant.
Solution
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In reverse biased condition of p-n junction diode, first increment in current is very small and constant until voltage attains the certain value known as reverse breakdown voltage. At this voltage, the resistance becomes negligible and very high current flows through the circuit.

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