An insulated wire is wound so that it forms a flat coil with N=100 turns. The radius of the innermost turns is R_(1)=4 cm . What magnetic moment will this coil have when a current of I=10 mA flows in it ?

An insulated wire is wound so that it forms a flat coil with N=100 tur

1.	An insulated wire is wound so that it forms a flat coil with N=100 turns. The radius of the innermost turns is R_(1)=4 cm . What magnetic moment will this coil have when a current of I=10 mA flows in it ?
Answer» ANSWER :`m=(1)/(3)piNI(R_(1)^(2)+R_(1)R_(2)+R_(2)^(2))=2.2 XX 10^(-3)A m^(2)`

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An insulated wire is wound so that it forms a flat coil with N=100 turns. The radius of the innermost turns is R_(1)=4 cm . What magnetic moment will this coil have when a current of I=10 mA flows in it ?

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