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Science
Magnetism
| Question | Answer |
|---|---|
| Iron, cobalt, nickel | can be magnetized by magnetic induction |
| Natural magnets | lodestone & magnetite |
| galvanometer | electromagnet surrounded by permanent magnets to measure current in wire |
| electromagnetic induction | moving coil of wire through magnetic field gives it a current |
| us household outlet | 120v, 60Hz |