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In a semi conductor diode, the reverse b...

In a semi conductor diode, the reverse biased current is due to drift of the free electrons and holes caused by

A

Thermal explansion only

B

Impurity atoms only

C

Both a and b

D

Neither by a nor by b.

Text Solution

Verified by Experts

The correct Answer is:
C
The free electrons and holes are produced due to thermal expansion only in pure semi - conductor which develop weak current in reverse biasing but in impure semi - conductor . Impure atoms also given ereverse current.
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