What is magnetic induction? Describe in detail how a steel needle can be magnetized by induction.

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Solution

Electromagnetic induction is a current generated by a changing magnetic field's voltage generation (electromotive force).
Magnetic induction is a technique for converting magnetic materials such as steel and iron into magnets.
A steel needle can be magnetized by induction by the following method:
Hold the steel needle close to a strong magnet but don't contact it.
The steel needle bar becomes an induced magnet, with the polarity of the end closest to the magnet being the polarity of the magnet.
As a result, the iron needle is pulled to and attached to the permanent magnet. Magnetic induction describes how magnets attract magnetic materials.
The phenomenon of induced magnetism is only temporary. If the permanent magnet is removed, the magnetic material will generally lose its induced magnetism.

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