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Find magnetic field at centre P if leng...

Find magnetic field at centre P if length of side of square loop is 20 cm.

A

`12sqrt2xx10^(-6)T`

B

`12xx10^(-6)T`

C

`6xx10^(-6)T`

D

`6sqrt2xx10^(-6)T`

Text Solution

Verified by Experts

The correct Answer is:
A
`B=(mu_(0)i)/(pi9)2sqrt2`
`=(4pixx10^(-7)xx3)/(pixx0.2)2sqrt2`
`=120sqrt2xx10^(-7)`
`B=12sqrt2xx10^(-6)T`
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