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Magnetic p[otential at a point of 0.5 m ...

Magnetic p[otential at a point of 0.5 m from the centre of short dipole and on a line inclined at`30^(@)` with equator is`2xx10^(-5)J//Am`.The magnitude of magnetic induction at that point is nearly

A

`1xx10^(-4) T`

B

`2xx10^(-4) T`

C

`1 xx 10^(4) T`

D

`2 xx10^(4)T`

Text Solution

Verified by Experts

The correct Answer is:
A
`(B)/(V)=(sqrt(3cos^(2)theta+1))/(rcostheta)`
`B=(sqrt(3cos^(2)60+1xx2xx10^(-5)))/(0.5xxcos60)=1.058xx10^(-4)T`
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