Moving Charges and Magnetism · Current loop and galvanometer
An insulated wire is wound so that it forms a flat coil with turns. The radius of the innermost turn is cm, and of the outermost turn cm. If 20 mA current flows in it then the magnetic moment will be . The value of is .
- (1)4.4
- (2)2.64
- (3)3.25
- (4)1.2
We corrected a printing error in the original paper
Source printed “If 20 mA current flow in it”.
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