A tiny electric dipole of dipole moment `p` is palced at a distance `r` from an infinitely long wire, with its `vecp` normal to the wire. If the linear charge density of the wire is `lambda`, the electrostatic force acting on the dipole is equal to

Options

A. `(lambdaP)/(4piepsilon_(0)r)`
B. `(lambdaP)/(piepsilon_(0)r)`
C. `(2lambdaP)/(piepsilon_(0)r)`
D. `(lambdaP)/(2piepsilon_(0)r^(2))`

Explanation

`(lambdap)/(2piepsilon_(0)r^(2))`
`F_("net")=2Fsin(theta//2)`
`=Ftheta=qE(l//r)`
`=(lambdap)/(2piepsilon_(0)r^(2))`