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Q.

Which of these does not use a magnet?


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a

Electric fan

b

DVD 

c

Computer hard disk

d

LCD TV

answer is A.

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Detailed Solution

LCD TVs do not use a magnet.
An electric fan has coils of wire to convert electrical energy into motion. Computer hard disk stores information which makes use of a magnet. DVDs make use of a magnet. Modern-day TVs do not make use of magnets.
 
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