Find the field at the origin O due to th...

Find the field at the origin O due to the current `i=2A`.

Verified by Experts

Here, `r=2 sin 30^@=1,`
`phi_1=60^@ , phi_2=30^@`
`vecB_2=(10^-7xx2)/1[sin60^@+sin30^@]`
`=(sqrt3+1)xx10^-7T`

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