M=m⋅L 
Rθ=L 3Rπ=L R=π3L M′=m(2R)sin30∘ =m(2)π3L×21=π3mL=π3M
The magnetic moment of an iron bar is M. It is now bent in such a way that it forms an arc section of a circle subtending an angle of 60∘ at the centre. The magnetic moment of this arc section is
Held on 30 Apr 2024 · Verified 9 Jul 2026.
π3M
π4M
πM
π2M
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