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JEE Main202126 Aug 2021Morning ShiftPhysicsMagnetic Effects of CurrentActual

Two short magnetic dipoles m 1 and m 2 each having magnetic moment of 1   A   m 2 are placed at point O and P respectively. The distance between O P is 1   m . The torque experienced by the magnetic dipole m 2 due to the presence of m 1 is _ _ _ _ _ _ _ _ × 10 - 7 N   m

Correct answer

1

Step-by-step solution

τ → = M → 2 × B → 1 τ = M 2 B 1 sin 90 ∘ = 1 × μ 0 4 π M ( 1 ) 3 × 1 = 10 − 7 N   m

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