alleryWhich machine uses an electromagnet to lift heavy scrap in a junkyard?
ACrane
BBicycle
CCandle
DClock
Answer & Solution
Correct answer: A. Crane
1. Electromagnets can be switched on and off.
2. Junkyard cranes use them to lift scrap iron.
3. A bicycle, candle or clock does not.
_Source: Wikipedia, Magnet, Electromagnets_
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