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Assertion: At resonance, power factor of...

Assertion: At resonance, power factor of L-C-R series circuit is 1.
Reason: At resonance, `X_(C) = X_(L)`

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:
A
At resonance, `X_(C)=X_(L)` and Z=R
`therefore` Power factor, `cosphi = R/Z=1`
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