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 A·m² B)6.7 A·m² C)3.3 A·m² D)2.6 A·m² E)1.2 A·m²

Question

Quizplus · Accepted Answer

The magnetic dipole moment of a coil is given by the product of the current flowing through the coil and the area of the coil. In this case, the current is 13 A and the area of the coil is 45 m * 100 = 4500 m^2. Therefore, the magnetic dipole moment of the coil is 13 A * 4500 m^2 = 58500 A·m^2.

A 45-M Long Wire Is Coiled So That It Makes