NEET Solved Paper 2014 Question 29
Question: Following figures show the arrangement of bar magnets in different configurations. Each magnet has magnetic dipole moment m. Which configuration has highest net magnetic dipole moment? [AIPMT 2014]
Options:
A) (a)
B) (b)
C) (c)
D) (d)
Show Answer
Answer:
Correct Answer: C
Solution:
Magnetic moment is from 5 to N $ m _{net}=\sqrt{m^{2}+m^{2}+2m^{2}\cos \theta } $
$ m _{net} $ will be maximum if cos6 is maximum. $ \cos \theta $ will be maximum when q will be minimum.
So, at $ \theta ={30^{o}},m _{net} $ will be maximum.
