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Assertion : In series L-C-R circuit, vol...

Assertion : In series `L-C-R` circuit, voltage will lead the current function for frequency greater than the resonance frequency.
Reason : At resonance frequency, phase difference between current function and voltage function is zero.

A

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

B

If both Assertion and Reason are true but Reason is not the correct explanation of Assertion

C

If Assertion is true, but the Reason is false.

D

If Assertion is false but the Reason is true.

Text Solution

Verified by Experts

The correct Answer is:
B
At resonance frequency `f_r`,
`X_C=X_L`
Now `X_L=2pifL` or `X_Lpropf`
For `fgtf_r,X_LgtX_C`
At resonance `X_L=X_Cimplies Z=R`
`:. Cosphi=R/Z=1`
or `phi=0^(@)`
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