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Two long straight wires are set parallel...

Two long straight wires are set parallel to each other. Each carriers a current `i` in the same direction and the separation between them is `2r`. The intensity of the magnetic field midway between them is

A

`mu_(0)i//r`

B

`4mu_(0)i//r`

C

zero

D

`mu_(0)i//4r`

Text Solution

Verified by Experts

The correct Answer is:
C
At `P`
`implies B_("net")=B_(1)-B_(1)`
Since `|B_(1)|=|B_(2)|`
So, `B_("net")=0`
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