Assertion (A) If the frequency of the applied AC is doubled, then the power factor of a series R-L circuit decreases.
Reason (R) Power factor of series R-L circuit is given by
\(\rm \cos\theta = \frac{2R}{\sqrt{R^2+\omega^2L^2}}\)
1
If both Assertion and Reason are true and Reason is correct explanation of Assertion.
2
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
3
If Assertion is true but Reason is false.
4
If both Assertion and Reason are false.