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Q.

Is it true that the magnetic field can be produced without a magnet?                       


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a

True

b

Flase 

answer is A.

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Detailed Solution

The given statement is True.
A magnetic field can be produced without the presence of a magnet. That is called an induced magnetic field. The magnetic field can be produced by using a current-carrying conductor. When current passes through a conductor, a magnetic field is produced around it, behaving like a magnet. The magnetic field strength depends on the magnitude of the current, the number of loops or the length of the coil we take. The direction can be determined from the right-hand thumb rule.
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