Physics-
General
Easy

Question

A cube of side b has a charge q at each of its vertices. The electric field due to this charge distribution at the centre of this cube will be

  1. q divided by b to the power of 2 end exponent    
  2. q divided by 2 b to the power of 2 end exponent    
  3. 32 q divided by b to the power of 2 end exponent    
  4. Zero    

The correct answer is: Zero


    Due to symmetric charge distribution

    Related Questions to study

    General
    Physics-

    The figure shows some of the electric field lines corresponding to an electric field. The figure suggests

    The figure shows some of the electric field lines corresponding to an electric field. The figure suggests

    Physics-General
    General
    Physics-

    Equal charges are given to two spheres of different radii. The potential will

    Equal charges are given to two spheres of different radii. The potential will

    Physics-General
    General
    Physics-

    In the figure the charge Q is at the centre of the circle. Work done is maximum when another charge is taken from point P to

    In the figure the charge Q is at the centre of the circle. Work done is maximum when another charge is taken from point P to

    Physics-General
    parallel
    General
    Physics-

    Two charge +q and -q are situated at a certain distance. At the point exactly midway between them

    Two charge +q and -q are situated at a certain distance. At the point exactly midway between them

    Physics-General
    General
    Physics-

    A metallic solid sphere is placed in a uniform electric field. The lines of force follow the path(s) shown in figure as

    A metallic solid sphere is placed in a uniform electric field. The lines of force follow the path(s) shown in figure as

    Physics-General
    General
    Physics-

    Below figures (1) and (2) represent lines of force. Which is correct statement

    Below figures (1) and (2) represent lines of force. Which is correct statement

    Physics-General
    parallel
    General
    Physics-

    Conduction electrons are almost uniformly distributed within a conducting plate. When placed in an electrostatic field Error converting from MathML to accessible text., the electric field within the plate

    Conduction electrons are almost uniformly distributed within a conducting plate. When placed in an electrostatic field Error converting from MathML to accessible text., the electric field within the plate

    Physics-General
    General
    Physics-

    An uncharged sphere of metal is placed in between two charged plates as shown. The lines of force look like

    An uncharged sphere of metal is placed in between two charged plates as shown. The lines of force look like

    Physics-General
    General
    Physics-

    If E is the electric field intensity of an electrostatic field, then the electrostatic energy density is proportional to

    If E is the electric field intensity of an electrostatic field, then the electrostatic energy density is proportional to

    Physics-General
    parallel
    General
    Physics-

    In the electric field of a point charge q, a certain charge is carried from point A to B, C, D and E. Then the work done

    In the electric field of a point charge q, a certain charge is carried from point A to B, C, D and E. Then the work done

    Physics-General
    General
    Physics-

    ABC is an equilateral triangle. Charges +q are placed at each corner. The electric intensity at O will be

    ABC is an equilateral triangle. Charges +q are placed at each corner. The electric intensity at O will be

    Physics-General
    General
    Physics-

    Figure shows the electric lines of force emerging from a charged body. If the electric field at A and B are E subscript A end subscript and E subscript B end subscript respectively and if the displacement between A and B is r then

    Figure shows the electric lines of force emerging from a charged body. If the electric field at A and B are E subscript A end subscript and E subscript B end subscript respectively and if the displacement between A and B is r then

    Physics-General
    parallel
    General
    Physics-

    The electric field inside a spherical shell of uniform surface charge density is

    The electric field inside a spherical shell of uniform surface charge density is

    Physics-General
    General
    Physics-

    The ratio of electrostatic and gravitational forces acting between electron and proton separated by a distance 5 cross times 1 0 to the power of negative 11 end exponent m comma will be (Charge on electron = 1.6 ´ 10–19 C, mass of electron = 9.1 ´ 10–31 kg, mass of proton = 1.6 cross times 1 0 to the power of negative 27 end exponent k g commaG equals 6.7 cross times 1 0 to the power of negative 11 end exponent N m to the power of 2 end exponent divided by k g to the power of 2 end exponent right parenthesis

    The ratio of electrostatic and gravitational forces acting between electron and proton separated by a distance 5 cross times 1 0 to the power of negative 11 end exponent m comma will be (Charge on electron = 1.6 ´ 10–19 C, mass of electron = 9.1 ´ 10–31 kg, mass of proton = 1.6 cross times 1 0 to the power of negative 27 end exponent k g commaG equals 6.7 cross times 1 0 to the power of negative 11 end exponent N m to the power of 2 end exponent divided by k g to the power of 2 end exponent right parenthesis

    Physics-General
    General
    Physics-

    When a glass rod is rubbed with silk, it

    When a glass rod is rubbed with silk, it

    Physics-General
    parallel

    card img

    With Turito Academy.

    card img

    With Turito Foundation.

    card img

    Get an Expert Advice From Turito.

    Turito Academy

    card img

    With Turito Academy.

    Test Prep

    card img

    With Turito Foundation.