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Assertion: We can measure the potential ...

Assertion: We can measure the potential barrier of a `PN` junction by putting a sensitive voltmeter across its terminals.
Reason: The current through the `PN` junction is not same in forward and reversed bias.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true but reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false.

D

If assertion is false but reason is true.

Text Solution

Verified by Experts

The correct Answer is:
D
We cannot measure the potential barrier of a PN-junction by connecting a sensitive voltmeter across its terminals because in the depletion region, there are no free electrons and holes and in the absence of forward biasing, PN- junction offers infinite resistance.
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