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A circular coil of radius 40 mm consists...

A circular coil of radius 40 mm consists of 250 turns of wire in which the current is 20 mA. The magnetic field at the centre of the coil is

A

`7.9 xx 10^(-5)T`

B

`7.9 xx 10^(-6)T`

C

`7.9 xx 10^(-4)T`

D

`7.9 xx 10^(-3)T`

Text Solution

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The correct Answer is:
A
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TARGET PUBLICATION-MAGNETIC EFFECT OF ELECTRIC CURRENT-CRITICAL THINKING
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