what are the two  methods by which a demagnetised iron bar can be magnetised

Dear Student
Kindly find the answer of your asked query.
 There are two types of magnetisation.
(1) Mechanical method
(2) Electrical Method

Mechanical method: IN this we rub the iron bar with permanent magnet many times in same position, and iron gets magnetised.
Electrical Method: In this type electrical current is used to magnetised the iron bar i.e. electromagnets are used in this method.

Hope this information will clear your doubt about magnetism.
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