Magnetism Question 214
Question: A magnet of magnetic moment $ 2,J,{{T}^{-1}} $ is aligned in the direction of magnetic field of 0.1 T. What is the net work done to bring the magnet normal to the magnetic field
[DCE 2004]
Options:
A) 0.1 J
B) 0.2 J
C) 1 J
D) 2 J
Show Answer
Answer:
Correct Answer: B
Solution:
$ W=MB(1-\cos \theta )=2\times 0.1\times (1-\cos 90^{o})=0.2J $
BETA
