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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: - A body of mass 2 kg is moved by a force F=3x where x is the distance covered.
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A body of mass 2 kg is moved by a force F=3x where x is the distance covered.
- In a potentiometer experiment two cells of e.m.f. E₁ and E₂ are used in series
- The decay constant of a radio isotope is λ. If A₁ and A₂ are its activities at time
- Charge Q is divided into two parts which are then kept some distance apart. The force
- When 10¹⁹elecrons are removed from a neutral metal plate through some process,
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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