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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
- In a Rutherford scattering experiment when a projectile of charge Z₁ and mass M₁
- A spring gun of spring constant 90 N/cm is compressed 12 cm by a ball of mass
- The distance of a geo-stationary satellite from the centre of the earth is nearest to
- The half life of radium is about 1600 year. Of 100 gram of radium existing now
- An inclined plane of length 5.60m making an angle of 45⁰ with the horizontal is placed
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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