PH-505
Properties of magnets
Physics · Secondary 3 · Medium · Properties of magnets
A student has a steel bar which might be an unmagnetised steel rod or a permanent magnet. Which test will reliably show that the bar is a magnet?
- Check if it attracts paper clips.
- Check if it is attracted to a known magnet.
- Check if one end repels the north pole of a known magnet.
- Sprinkle iron filings on it and see if filings cling to it.
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