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Question

Physics Question on Magnetism and matter

The unit of magnetic moment is

A

A−m2A-{{m}^{2}}

B

A-m

C

A−m3A-{{m}^{3}}

D

kg−m3kg-{{m}^{3}}

Answer

A−m2A-{{m}^{2}}

Explanation

Solution

Magnetic moment (M)=NIA(M)=NIA where N=N= number of turn, I=I= electron current, A=A= area of cross-section of the coil ∴\therefore Unit of magnetic moment =A−m2=A-{{m}^{2}}