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The magnetic field at the centre of a ci...

The magnetic field at the centre of a circular coil of radius `r` carrying current `l` is `B_(1)`. The field at the centre of another coil of radius `2r` carrying same current `l` is `B_(2)`. The ratio `(B_(1))/(B_(2))` is

A

`(1)/(2)`

B

1

C

2

D

4

Text Solution

Verified by Experts

The correct Answer is:
C
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