Questions
If three identical bar magnets each of magnetic moment 9m are arranged in the form of an equilateral triangle such that unlike poles are in contact the resultant magnetic moment is
detailed solution
Correct option is D
m1=9m, m2=9m, m3=9mResultant of 1 and 2 , MR1=m12+m22+2m1m2cosθ⇒MR1=9m2+9m2+29m9m−12=9mNow, MR1& m3 are opposite to each other ⇒MR=MR1−m3=9m-9m=0Talk to our academic expert!
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