Physics
State two differences between an electromagnet and a permanent magnet.
Electro-Magnetism
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Answer
Comparison of an electromagnet with a permanent magnet
| Electromagnet | Permanent magnet |
|---|---|
| It is made up of soft iron. | It is made up of steel. |
| It produces the magnetic field as long as current flows in it's coil. i.e., it produces the temporary magnetic field. | It produces a permanent magnetic field. |
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