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A point negative charge -Q is placed at ...

A point negative charge -Q is placed at a distance r from a dipole with dipole moment P in the xy plane as shown in fig. The x-component of force acting on the charge-Q is

A

`-(pKQ)/(r) cos theta hat(i) `

B

`(pKQ)/(r) cos theta hat(i)`

C

`-(2pKQ)/(x^(3)) cos theta hat(i)`

D

`(2pkQ)/(x^(3)) cos theta hat(i)`

Text Solution

Verified by Experts

The correct Answer is:
C
`overline E_1=(2 kp cos theta)/r^3 i`

`overlineF_x=-Q overline E_1=(-2 kp Q)/r^3 cos theta hat i`
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