ELECTRICAL METHOD.

Electrical method for magnetisation

For magnetization, a direct current flowing into a solenoid (a long insulated wire coiled into a cylinder) produces a magnetic field that, inside the coil, is uniform in strength and direction.

• The solenoid becomes a magnet.

A steel bar placed inside the coil for a short while becomes magnetised due to magnetic induction from the solenoid.

• The polarities of the magnet depend on the direction of current flow.

Magnetisation by electric current method creates more powerful magnets than other magnetization methods such as stroking.

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