In an electric motor, a circular coil with 100 turns of radius 2.0 cm can rotate between the pol

step 1 High in the given problem number of turns in the circular coil of electric motor are given as n

In an electric motor, a circular coil with 100 turns of...

Key Concepts

Magnetic Dipole Moment

This is a measure of the strength and orientation of a magnetic source, such as a current-carrying loop. It is calculated by multiplying the current by the area of the loop (and the number of turns if the coil has multiple turns). It plays a central role in determining how the loop interacts with an external magnetic field.

Torque on a Current Loop

When a current loop is placed in a magnetic field, it experiences a torque that tends to align the loop's magnetic dipole moment with the field direction. The magnitude of this torque is given by the product of the magnetic dipole moment, the magnetic field strength, and the sine of the angle between them, reaching its maximum when the angle is 90 degrees.

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