Charge -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 places at P where OP=y and y>>2a. The charge Q experience an electrostatic force F. If Q is now moved along the equational line to P' such that the force on Q woll be close to :
9F
27 F
F/3
3F
At equatorial Point -
If r >> l
- wherein
Angle between Eaxial and P is 180°.
Electric field of equitorial plane of dipole
At P,
At P' ,
9F
Option 2)27 F
Option 3)F/3
Option 4)3F
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