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On increasing number of coils the resistance of wire increases and thus current reduces. But why then strength of magnetic field increases even current is directly propotional to B. ??

Posted by Yash Yadav 5 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

The electromagnets could be made strong by increasing the number of turns in the coil and by increasing the current passing through the coil. Hence, the strength of magnetic field generated is proportional to the amount of current through the winding.

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CBSE > Class 10 > Science