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Assertion: At resonance, power factor of...

Assertion: At resonance, power factor of series L-C-R circuit is zero.
Reason: At resonance, current function and voltage functions are in same phase.

A

If both Assertion and Reason are true and Reason is the correct explanation of Assertion.

B

If both Assertion and Reason are true but Reason is not the correct explanation of 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
At resonance, `phi = 0`
`therefore cosphi =1` or power factor =1
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