PH-1762
Induced magnetism
Physics · Secondary 4 · Hard · Induced magnetism
Several paper clips hang in a chain from the south pole of a bar magnet. The top clip touches the magnet, and the others hang below it. The magnet is then quickly pulled away. What happens to the paper clips and why?
- All clips remain in a chain because they are now permanent magnets
- Only the top clip falls; the others stay together
- All clips fall because the induced magnetism in them disappears
- The clips spread out because they repel one another strongly
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