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Figure shows some of the equipotential s...

Figure shows some of the equipotential surfaces of the magnetic scalar potential. Find the magnetic field `B` at a point in the region.

A

`2xx10^(-4)T`

B

`4xx10^(-4)T`

C

`8xx10^(-4)T`

D

`12xx10^(-4)T`

Text Solution

Verified by Experts

The correct Answer is:
A
We know that `B=(DeltaV)/(Deltar)=((V_(2)-V_(1)))/(Deltar)`
= `(V_(1)-V_(2))/(Deltar)`
`=((0.2-0.1)xx10^(-4))/(0.1sin30^(@))`
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