| ⇦ | 
| ⇨ |
The value of workdone for rotating a magnet of magnetic moment M by an angle θ in external magnetic field H is given by
Options
(a) MH cos θ
(b) 2MH sin²(θ/2)
(c) MH sin θ
(d) MH (1-sin²θ)
Correct Answer:
MH cos θ
Explanation:
MH (1 – cos θ) = work done
.·. W = MH [1 – 1 + 2 sin² (θ / 2)] = 2MH sin² (θ / 2)
Related Questions: - The power supplied by a force acting on a particle moving in a straight line
- Three capacitors 3μF,6μF and 6μF are connected in series to a source of 120V.
- A circuit area 0.01 m² is kept inside a magnetic field which is normal to its plane.
- A plane electromagnetic wave of frequency 20 MHz travels through a space along
- The dual nature of light is exhibited by
Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The power supplied by a force acting on a particle moving in a straight line
- Three capacitors 3μF,6μF and 6μF are connected in series to a source of 120V.
- A circuit area 0.01 m² is kept inside a magnetic field which is normal to its plane.
- A plane electromagnetic wave of frequency 20 MHz travels through a space along
- The dual nature of light is exhibited by
Topics: Magnetic Effects of Current and Magnetism (167)
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
B is the right option