Chapter: AC Circuits· Physics

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

Q.1 (ix) In a series LCR circuit the phase difference between the voltage and the current is 45º. Then the power factor will be ____.

A. 0.6071

B. 0.7071

C. 0.8081

D. 1.0

Doubtly Asked 29 Oct 2026 Board exam · July 2024 hsc 12th Save WhatsApp Report

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Best answer

Answer: B. 0.7071

Answer: (b) 0.7071

Power factor \(= \cos\phi = \cos 45^\circ = \dfrac{1}{\sqrt{2}} = 0.7071\).

Doubtly AI · 29 Oct 2026 AI-generated · not yet verified Report

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