A short electric dipole has dipole moment and is held fixed in air with its axis…
PHYSICS · Multi-part · CBSE · Physics · Electrostatic Potential and Capacitance · Electrostatic Potential and Capacitance
Problem
A short electric dipole has dipole moment 1.5×10−7Cm and is held fixed in air with its axis along the z-direction. At a point R, the dipole produces an electric potential of 90V. The point R is located such that it makes an angle of 30∘ with the dipole axis.
(i) Determine the distance of point R from the centre of the dipole.
(ii) Keeping the angle the same, the point is moved to double the distance obtained in part (i). Calculate the new potential at this position.
(iii) By what factor does the potential change when the distance of a point from a dipole is doubled while the angle remains unchanged? Explain whether this factor depends on the angle chosen.