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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 2 sqrt(2) r`

C

`(mu_(0) I // sqrt(2) pi r)`

D

`(mu_(0) I)/(4 pi r) [2 + sqrt(2)]`

Text Solution

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The correct Answer is:
D
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