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The power factor of an AC circuit having resistance R and inductance L connected in series to an AC source of angular frequency ω is
Options
(a) zero
(b) ωL/R
(c) R/√R²+ω²L²
(d) R/ωL
Correct Answer:
R/√R²+ω²L²
Explanation:
power factor, cos ɸ = R / Z = R / √[R² +ω²L²]
Related Questions: - Moment of inertia of a uniform circular disc about a diameter is I. Its moment
- The identical cells connected in series are needed to heat a wire of length one meter
- Which one of the following is not due to total internal reflection?
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Moment of inertia of a uniform circular disc about a diameter is I. Its moment
- The identical cells connected in series are needed to heat a wire of length one meter
- Which one of the following is not due to total internal reflection?
- In the spectrum of hydrogen, the ratio of the longest wavelength in the Lyman series
- When volume of a system is increased two times and temperature is decreased
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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