| ⇦ | 
| ⇨ |
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: - In a potentiometer experiment, the balancing with a cell is at length 240 cm.
- A 1 kg particle strikes a wall with velocity 1 m/s at an angle 30° and reflects
- An α-particle and a proton travel with the same velocity in a magnetic field
- If longitudinal strain for a wire is 0.03 and its poisson’s ratio is 0.5
- A battery of e.m.f. E and internal resistance r is connected to an external resistance
Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In a potentiometer experiment, the balancing with a cell is at length 240 cm.
- A 1 kg particle strikes a wall with velocity 1 m/s at an angle 30° and reflects
- An α-particle and a proton travel with the same velocity in a magnetic field
- If longitudinal strain for a wire is 0.03 and its poisson’s ratio is 0.5
- A battery of e.m.f. E and internal resistance r is connected to an external resistance
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply