Question

Three identical bar magnets each of magnetic moment M are arranged in the form of an equilateral triangle such that at two vertices like poles are in contact. The resultant magnetic moment will be

• A. Zero
• B. 2M
• C. $\sqrt{2}M$
• D. $M\sqrt{3}$

Answer 1

Answer: (B)

$M_{res}=\sqrt{(\sqrt{3}M{)}^2+M^2}$