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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: - Two spheres A and B of masses m and m respectively collide. A is at rest initially
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two spheres A and B of masses m and m respectively collide. A is at rest initially
- Zenor diode is used for
- The relationship between decay constant λ and half-life T of a radioactive substance is
- A charged particle with a velocity 2×10³ ms⁻¹ passes undeflected through electric field
- Penetrating power of X-rays does not depend on
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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