STANDARD Physics Power Factor MCQ Question with Solution

In a series LCR circuit, the phase difference between the voltage and the current is 45°. Then the power factor will be

A

0.607

B

0.707

C

0.808

D

1

Option B

The power factor in a series LCR circuit is given by cos(ϕ). For ϕ = 45°, cos(45°) = 1/√2 = 0.707.

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