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How does the strength of the Magnetic field at the centre of a circular coil of a wire depend on:

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asked Jan 23, 2018 in Physics by Kundan kumar (49,132 points) ● 34 ● 381 ● 1016

How does the strength of the Magnetic field at the centre of a circular coil of a wire depend on:
(a) radius of the coil (b) number of turns in the coil.

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answered Jan 23, 2018 by Vikash Kumar (144,729 points) ● 8 ● 11 ● 21
selected Jan 23, 2018 by Kundan kumar
 
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(a) More the radius weaker the field.
(b) Field strength is directly proportional to the number of turns in the coil.

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