हिंदी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Equipotentials at a great distance from a collection of charges whose total sum is not zero are approximately. - Physics

Advertisements
Advertisements

प्रश्न

Equipotentials at a great distance from a collection of charges whose total sum is not zero are approximately.

विकल्प

  • spheres

  • planes

  • paraboloids

  • ellipsoids

MCQ
Advertisements

उत्तर

spheres

Explanation:

The collection of charges, whose total sum is not zero, with regard to great distance can be considered as a single-point charge. The equipotential surfaces due to a point charge are spherical.

Important point:

  • The electric potential due to point charge q is given by V = q/4πε0r
  • It means electric potential due to point charge is same for all equidistant points. The locus of these equidistant points, which are at the same potential, form spherical surface.
shaalaa.com
Equipotential Surfaces
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 2: Electrostatic Potential And Capacitance - MCQ I [पृष्ठ ११]

APPEARS IN

एनसीईआरटी एक्झांप्लर Physics [English] Class 12
अध्याय 2 Electrostatic Potential And Capacitance
MCQ I | Q 2.05 | पृष्ठ ११

संबंधित प्रश्न

Draw a sketch of equipotential surfaces due to a single charge (-q), depicting the electric field lines due to the charge


A regular hexagon of side 10 cm has a charge 5 µC at each of its vertices. Calculate the potential at the centre of the hexagon.


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.)


Draw equipotential surfaces:

(1) in the case of a single point charge and

(2) in a constant electric field in Z-direction. Why are the equipotential surfaces about a single charge not equidistant?

(3) Can electric field exist tangential to an equipotential surface? Give reason


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


Why is there no work done in moving a charge from one point to another on an equipotential surface?


Draw the equipotential surfaces due to an electric dipole.


Write two important characteristics of equipotential surfaces.


A particle of mass 'm' having charge 'q' is held at rest in uniform electric field of intensity 'E'. When it is released, the kinetic energy attained by it after covering a distance 'y' will be ______.


A unit charge moves on an equipotential surface from a point A to point B, then ______.

If a unit positive charge is taken from one point to another over an equipotential surface, then ______.

Equipotential surfaces ______.


The work done to move a charge along an equipotential from A to B ______.

  1. cannot be defined as `- int_A^B E.dl`
  2. must be defined as `- int_A^B E.dl`
  3. is zero.
  4. can have a non-zero value.

Prove that a closed equipotential surface with no charge within itself must enclose an equipotential volume.


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


Draw equipotential surfaces for (i) an electric dipole and (ii) two identical positive charges placed near each other.


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


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×