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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 long straight wire of radius a carries a steady current I. The current is uniformly
- The weight of a body on surface of earth is 12.6 N. When it is raised to a height
- A bar magnet of moment M and pole strength m is cut into parts of equal lengths.
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A long straight wire of radius a carries a steady current I. The current is uniformly
- The weight of a body on surface of earth is 12.6 N. When it is raised to a height
- A bar magnet of moment M and pole strength m is cut into parts of equal lengths.
- The input resistance of a silicon transistor is 100 W. Base current is changed
- A ray enters a glass sphere of refractive index μ=√3 at an angle of incidence of 60⁰
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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