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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: - Two cells when connected in series are balanced on 8m on a potentiometer.
- The lowest frequency of light that will cause the emission of photoelectrons
- The shortest wavelength in Lyman series is 91.2 nm. The largest wavelength
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two cells when connected in series are balanced on 8m on a potentiometer.
- The lowest frequency of light that will cause the emission of photoelectrons
- The shortest wavelength in Lyman series is 91.2 nm. The largest wavelength
- An adiabatic process occurs at constant
- A point charge is kept at the centre of a metallic insulated spherical shell. Then
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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