Question

A short dipole with a dipole moment P(vector) is located at a distance r from infinite line charge having linear charge density lemda . If dipole moment is perpendicular to line charge then net force on dipole is ?? AND WHY , i had solved half , but my answer is not true .. Answer is : P(lemda)/2(pie) (e*) r^2

Answer 1

Sorry about the poor quality picture.The solution is in the picture.Anyway the - is in front of the force because the direction of dipole moment in your question is opposite to that of that i have taken.

Answer 2

thanks dude .....

Answer 3

No problem.