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Equipotential Surfaces

Draw an equip...

Question

Draw an equipotential surface for a system consisting of two charges Q=Q seperated by a distance r in air. Locate the points where the potential due to the dipole is zero.

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Solution

The equipotential surface for the system is as shown.

Electric potential is zero at all points in the plane passing through the dipole equator AB.

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Similar questions

Q. Draw the equipotential surfaces due to an electric dipole. Locate the points where the potential due to the dipole is zero.

Q. (a) Define electric dipole moment. Is it a scalar or a vector?
Derive the expression for the electric field of a dipole at a point on the equatorial plane of the dipole.
(b) Draw the equipotential surface due to an electric dipole. Locate the points where the potential due to the dipole is zero.

Q. Two point charges

4 μ C

- 6 μ C

are seperated by a distance of

10 c m

in air. At what point between the charges on the line joining the charges is the potential zero.

Q. (a) Explain why, for a charge configuration, the equipotential surface through a point is normal to the electric field at that point ?
Draw a sketch of equipotential surfaces due to a single charge (-q), depicting the electric field lines due to the charge.
(b) Obtain an expression for the work done to dissociate the system of three charges placed at the vertices of an equilateral triangle of side 'a' as shown in the figure.

Q. Assertion :The electrostatic force on a charged particle located on an equipotential surface is zero. Reason:

x

component of electric field is given by,

E_{x} = - \frac{δ V}{δ x}

and on equipotential surface potential

V

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