SH 402 · Chapter 7
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An electric dipole consists of charges $10\,\mathrm{\mu C}$ and $-10\,\mathrm{\mu C}$ separated by a distance of $1\,\mathrm{mm}$. What is the maximum torque experienced by the dipole if placed in the uniform electric field of intensity $400\,\mathrm{V/cm}$?
A particle of charge −q and a mass m is placed midway between two equal positive charges $q_{0}$ of separation d. If the negative charge −q is displaced in perpendicular direction to the line joining them and released, show that the particle describes a SHM with a period
$$T = {[\frac{{\varepsilon}_{0}m{\pi}^{3}{d}^{3}}{q{q}_{0}}]}^{1/2}$$
Define an electric dipole. Discuss the behavior of dipole in electric field. Mention the condition for maximum torque and maximum potential energy in the electric field.