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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 block of mass M is attached to the lower end of a vertical spring
- Which of the following measurement is most precise?
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- An inductor 20 mH, a capacitor 50 μF and a resistor 40Ω are connected in series
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A block of mass M is attached to the lower end of a vertical spring
- Which of the following measurement is most precise?
- A simple pendulum is suspended from the ceiling of a lift. When the lift is at rest
- An inductor 20 mH, a capacitor 50 μF and a resistor 40Ω are connected in series
- 40 g of Argon is heated from 40⁰C to 100⁰C (R=2 cal/mole). Heat absorbed at constant
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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