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Charges -q and +q located at A and B, re...

Charges `-q and +q` located at A and B, respectively, constitute an electric dipole. Distance AB = 2a, O is the mid point of the dipole and OP is perpendicular to AB. A charge Q is placed at P where OP = y and `y gt gt 2a`. The charge Q experiences an electrostatic force F. If Q is now moved along the equatorial line to P' such that `OP' = ((y)/(3))`, the force on Q will be close to `((y)/(3) gt gt 2a)`

A

9F

B

27F

C

3F

D

`F//3`

Text Solution

Verified by Experts

The correct Answer is:
B
`F_(eq)=(kPQ)/(r^(3))`
`rArr (F_(P))/(F_(p'))=((r_(p'))/(r_(p)))^(3)=(1)/(27)`
`F_(p')=27F`|
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