Question

- qive two points of difference between
and electromagnet and permanent
magnet?​

Answer 1

Permanent Magnet v. Electromagnet: Magnetic Properties

A permanent magnet’s magnetic properties exist when the magnet is (magnetized). An electromagnetic magnet only displays magnetic properties when an electric current is applied to it. That is how you can differentiate between the two. The magnets that you have affixed to your refrigerator are permanent magnets, while electromagnets are the principle behind AC motors.

Permanent Magnet v. Electromagnet: Magnetic Strength

Permanent magnet strength depends upon the material used in its creation. The strength of an electromagnet can be adjusted by the amount of electric current allowed to flow into it. As a result, the same electromagnet can be adjusted for different strength levels.

Answer 2

electromagnet-

made up of soft iron

produces temporary magnetic field

magnetic field is very strong

polarity can be changed

permanent magnet-