Determine the magnitude of the force between an electric dipole with a dipole moment of 2 ✕ 10-29 C m and an electron. The electron is positioned r = 25nm from the centre of the dipole, along the dipole axis. Hint: Assume that r d, with d the charge separation distance in the dipole.

Question

Determine the magnitude of the force between an electric dipole with a dipole moment of 2 ✕ 10-29 C m and an electron. The electron is positioned r = 25nm from the centre of the dipole, along the dipole axis. Hint: Assume that r >> d, with d the charge separation distance in the dipole.

Chanz · Answer

Maybe I'm oversimplifying but this looks like a simple Coulomb's Law with q1 = 2e-29, q2 = 1.67e-19 and r = 25nm.