An electric slot car has a coil with 100 turns of wire. These loops have a current of 0.1 A and cover an area of 0.1 cm2. If the coil is placed in a uniform 1 T magnetic field such that the loop areas are perpendicular to the B-field, what torque will be felt by the coil?

The torque will be felt by the coil is zero

Explanation:

The torque is:

Where

μ is the magnetic moment = N * I * A, where N is the number of turns, I is the current and A is the area

A = 0.1 cm² = 1x10⁻⁵m²

If the angle between the area and the magnetic field is 0 (are in parallel), then:

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explanation: