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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]
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A bubble is rising from bottom of a lake. The volume of bubble becomes
- The horizontal and vertical components of earth’s magnetic field at a place
- The intermediate image formed by the objective of a compound microscope is
- The velocity of electromagnetic radiation in a medium of permittivity ε₀
- Three fourth of the active material decays in a radioactive sample in 3/4 sec
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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