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An electric current passes through a lon...

An electric current passes through a long straight wire. At a distance 5 cm from the wire the magnetic field is `B`. The field at 20 cm from the wire would be

A

`B/6`

B

`B/4`

C

`B/3`

D

`B/2`

Text Solution

Verified by Experts

The correct Answer is:
B
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