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The magnetic field strength at a point P...

The magnetic field strength at a point `P` distant `r` due to an infinite straight wire carrying a current `i` is as shown in the figure

A

`mu_(0)`

B

`mu_(0)i//2sqrt(2)r`

C

`(mu_(0)i//sqrt(2)pir)`

D

`(mu_(0)i)/(4pir)[2+sqrt(2)]`

Text Solution

Verified by Experts

`B_("net")=2(mu_(0)I)/(4pir)[sin90^(@)+sin45^(@)]o.`
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