MCQ
An electromagnet:
- AHas its own persistent magnetic field.
- BActs as a magnet when an electric current passes through it.
- CBoth A and B.
- DNone of the above.
✓
Answer
- Acts as a magnet when an electric current passes through it.
Explanation:
Electromagnets are a different from permanent magnets. Electromagnets are made of coils of wire with electricity passing through them.
When the coils of wire in an electromagnet have an electric current passing through them then magnetic field produced around the coils so the coils behave like a magnet.
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