Which of the following methods is used to magnetize a magnetic substance without touching it by a magnet?
A
single touch
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B
double touch
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C
using electric current
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D
by induction
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Solution
The correct option is A single touch Given : Which of the following methods is used to magnetize a magnetic substance without touching it by a magnet?
Solution :
Answer is by induction
In this method a soft iron bar is near a strong magnet without touching it. The soft iron bar converts to induced magnets with opposite polarity to that of strong magnet.