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Question

A crane uses a mysterious object ‘X’ to separate magnetic materials from junk. The object ‘X’ is most probably a:


A

Magnetic material

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B

Electromagnet

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C

Permanent magnet

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D

None of the above

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Solution

The correct option is B

Electromagnet


The crane has to lift magnetic material during which the object should act as a magnet. But, while dumping it should lose its magnetic properties. So, the crane uses an electromagnet.


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