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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
- Charge density for intrinsic semiconductor will be
- A layer of colourless oil spreads on water surface. White light is incident on it
- The electric and magnetic field assiciated with an E.M. wave
- A uniform electric field and uniform magnetic field are acting along the same
- Two circuits have a mutual inductance of 0.1 H. What average e.m.f. is induced
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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