Question

A short dipole has dipole moment 10 -2 C m along negative Z axis. It is kept in an electric field along positive Z axis which uniformly increases at the rate of 10^3 N/C per metre. Find the net force and torque acting on the dipole.

Answer 1

Answer:

A dipole of dipole moment p is placed in a non uniform electric field along x axis. electric field is increasing at the rate of 1v/m then the force on dipole is...

Answer : force on dipole = p

explanation : given, A dipole of dipole moment p is placed in a non-unifrom

electric field along x - axis. Let us consider that E(x) is electric field along x-axis.

now, electric field is increasing at the rate of 1 V/m . i.e., dE(x)/dx = 1V/m.

we know, force due to dipole is given by, F = dipole moment × electric field gradient

= p × dE(x)/dx

= p × 1

= p

Hence, force on the dipole should be p ✔