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A dipole of dipole moment vecp=phati is ...


A dipole of dipole moment `vecp=phati` is kep at the centre of a circle of radius `r` as shown in the figure. The radius of the circle is very large in comparison to the distance between the two charges of the dipole. A & B are two points on the axis and C & D are two points on the equitorial line of the dipole if `V_(A),V_(B),V_(C)` and `V_(D)` are potentials at A,B,C and D respectively then, which of the following is correct?

A

`V_(A)-V_(B)=0,V_(A)-V_(D)=(2kp)/(r^(2))`

B

`V_(A)-V_(B)=(2kp)/(r^(2)), V_(A)-V_(D)=(kp)/(r^(2))`

C

`V_(A)-V_(B)=0, V_(A)-V_(D)=(kp)/(r^(2))`

D

`V_(A)-V_(B)=(2kp)/(r^(2)), V_(A)-V_(D)=(2kp)/(r^(2))`

Text Solution

Verified by Experts

The correct Answer is:
B
`V_(C)=V_(D)=0`
`V_(A)=(kp)/(r^(2))`
`V_(B)=(kp)/(r^(2))`
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