A circular loop with N turns has radius r . It lies in the x-y plane carrying current I in the anti-clockwise direction. If the magnetic field in the region is B → = B 0 i ^ , then find the torque ( τ → ) acting on the loop.

Question

A circular loop with N turns has radius r . It lies in the x-y plane carrying current I in the anti-clockwise direction. If the magnetic field in the region is B → = B 0 i ^ , then find the torque ( τ → ) acting on the loop., B 0 N I π r 2 j ^, B 0 I π r 2 j ^, B 0 N I π r 2 k ^, B 0 π r 2 k ^

MARKS App · Accepted Answer

Magnetic moment M → = N I π r 2 k ^ Torque τ → = M → × B → = N I π r 2 k ^ × ( B 0 i ^ ) = B 0 N I π r 2 j ^ N m

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