| ⇦ | 
| ⇨ |
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: - The electric vector vibration of an electromagnetic wave is given by
- A particle has initial velocity(3i⃗ +4j⃗)and has acceleration (0.4i⃗ +0.3j⃗)
- What is the voltage gain in a common-emiiter amplifier, when input resistance is 4 Ω
- A small part of the rim of a fly wheel breaks off while it is rotating at a constant
- The resistances of the four arms P,Q,R and S in a Wheatstone’s bridge
Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The electric vector vibration of an electromagnetic wave is given by
- A particle has initial velocity(3i⃗ +4j⃗)and has acceleration (0.4i⃗ +0.3j⃗)
- What is the voltage gain in a common-emiiter amplifier, when input resistance is 4 Ω
- A small part of the rim of a fly wheel breaks off while it is rotating at a constant
- The resistances of the four arms P,Q,R and S in a Wheatstone’s bridge
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