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Magnetism and Electromagnets
Physics · Chapter 10 · Theme 7: Electricity and Magnetism
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Topics 4
- Law of magnetism: like poles repel, unlike poles attract
- Test for a magnet: repulsion as the sure test
- Electromagnetism: a current-carrying coil behaves like a magnet; making an electromagnet with an iron core
- Uses of electromagnets; construction and working of an electric bell