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A magnet is used in the motor of an electrical fan so that the motor of the electric fan can spin and this allows you to feel the wind caused by the movement of the blades of the fan.

2 Magnets are usually used in an electrical fan.

They are placed opposite of each other with hundreds of coils of copper wire between the magnets. This set-up is known as a simple electric motor.

Detail:

Magnetic field lines pass from the north pole of the magnet to the south pole.

When an electromotive force is supplied to the coil of wire, current flows through the coil of wire.

The coil of wire produces a magnetic field that interacts with the magnetic field lines caused by the magnets.

According to Fleming's Left hand rule, the motor will rotate in a clockwise/ anti-clockwise direction due to the forces on the LHS and RHS of the coil. This creates a clockwise/anti-clockwise torque that causes the motor to rotate.

A split-ring commutator and carbon brushes are usually used.

Split-ring commutators allow the direction of current to be reversed every half a cycle of revolution to allow for a continuous rotation.

A carbon brush is used to allow for continuous electrical contact between circuit and the split-ring commutator (except when it reaches the gap).

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