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The magnetic potential at a point at a d...

The magnetic potential at a point at a distance r from its centre along its axis is V.The magnetic potential at a point at the distance 2 r will be

A

V

B

2V

C

V/2

D

V/4

Text Solution

Verified by Experts

The correct Answer is:
D
`V_(1)=V,r_(1)=r, r^(2)=2r, V_(2)=?`
`V oo (1)/(r^(2))`
`(V_(2))/(V_(1))=((r)/(2r))^(2)V_(1)=(V)/(4)`
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