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Magnetic field at point 'P' due to given...

Magnetic field at point 'P' due to given current distribution :-

A

`mu_(0)ia/pi r^(2)`

B

`mu_(0)ia/pi r`

C

`mu_(0)Iia/2pi r^(2)`

D

`2mu_(0)ia/pi r^(2)`

Text Solution

Verified by Experts

The correct Answer is:
1
Net magnetic field at P, `B_(net)= 2B sin theta`, where B=magnetic field due to one wire at `P =mu_(0)/4pi /2i/r `and `sin theta =a/r`
`B_(net)=2xxmu_(0)/4pi .2i/r xxa/r =mu_(0)ia/pi r^(2)`
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