English

Draw the Equipotential Surfaces Due to an Electric Dipole. Locate the Points Where the Potential Due to the Dipole is Zero. - Physics

Advertisements
Advertisements

Question

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

Solution

Equipotential surface due to electric dipole:

The potential due to the dipole is zero at the line bisecting the dipole length.

shaalaa.com
Equipotential Surfaces
  Is there an error in this question or solution?
2012-2013 (March) All India Set 1

RELATED QUESTIONS

A man fixes outside his house one evening a two metre high insulating slab carrying on its top a large aluminium sheet of area 1 m2. Will he get an electric shock if he touches the metal sheet next morning?


What are the forms of energy into which the electrical energy of the atmosphere is dissipated during a lightning?
(Hint: The earth has an electric field of about 100 Vm−1 at its surface in the downward direction, corresponding to a surface charge density = −10−9 C m−2. Due to the slight conductivity of the atmosphere up to about 50 km (beyond which it is good conductor), about + 1800 C is pumped every second into the earth as a whole. The earth, however, does not get discharged since thunderstorms and lightning occurring continually all over the globe pump an equal amount of negative charge on the earth.)


What is the geometrical shape of equipotential surfaces due to a single isolated charge?


Depict the equipotential surface due to
(i) an electric dipole,
(ii) two identical positive charges separated by a distance.


Statement - 1: For practical purpose, the earth is used as a reference at zero potential in electrical circuits.

Statement - 2: The electrical potential of a sphere of radius R with charge Q uniformly distributed on the surface is given by `Q/(4piepsilon_0R)`.


Which of the following statements is/are correct for equipotential surface?
  1. The potential at all the points on an equipotential surface is same.
  2. Equipotential surfaces never intersect each other.
  3. Work done in moving a charge from one point to other on an equipotential surface is zero.

Consider a uniform electric field in the ẑ direction. The potential is a constant ______.

  1. in all space.
  2. for any x for a given z.
  3. for any y for a given z.
  4. on the x-y plane for a given z.

Equipotential surfaces ______.

  1. are closer in regions of large electric fields compared to regions of lower electric fields.
  2. will be more crowded near sharp edges of a conductor.
  3. will be more crowded near regions of large charge densities.
  4. will always be equally spaced.

Find the equation of the equipotentials for an infinite cylinder of radius r0, carrying charge of linear density λ.


Equipotential surfaces are shown in figure. Then the electric field strength will be ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×