Question

A 45-m long wire is coiled so that it makes a coil containing 100 circular loops, one on top of the other. If the wire carries a current of 13 A, what is the magnetic dipole moment of the coil?
A) 21 Am2
B) 6.7 Am2
C) 3.3 Am2
D) 2.6 Am2
E) 1.2 Am2

Answer

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