Physics-
General
Easy

Question

As shown in the figure, charges +q and -q are placed at the vertices B and C of an isosceles triangle. The potential at the vertex A is

  1. fraction numerator 1 over denominator 4 pi epsilon subscript 0 end subscript end fraction. fraction numerator 2 q over denominator square root of a to the power of 2 end exponent plus b to the power of 2 end exponent end root end fraction    
  2. Zero    
  3. fraction numerator 1 over denominator 4 pi epsilon subscript 0 end subscript end fraction. fraction numerator q over denominator square root of a to the power of 2 end exponent plus b to the power of 2 end exponent end root end fraction    
  4. fraction numerator 1 over denominator 4 pi epsilon subscript 0 end subscript end fraction. fraction numerator left parenthesis negative q right parenthesis over denominator square root of a to the power of 2 end exponent plus b to the power of 2 end exponent end root end fraction    

The correct answer is: Zero


    Potential at A = Potential due to (+q) charge
    + Potential due to (– q) charge
    equals fraction numerator 1 over denominator 4 pi epsilon subscript 0 end subscript end fraction. fraction numerator q over denominator square root of a to the power of 2 end exponent plus b to the power of 2 end exponent end root end fraction plus fraction numerator 1 over denominator 4 pi epsilon subscript 0 end subscript end fraction fraction numerator left parenthesis negative q right parenthesis over denominator square root of a to the power of 2 end exponent plus b to the power of 2 end exponent end root end fraction equals 0

    Related Questions to study

    General
    Physics-

    Three identical point charges, as shown are placed at the vertices of an isosceles right angled triangle. Which of the numbered vectors coincides in direction with the electric field at the mid-point M of the hypotenuse

    Three identical point charges, as shown are placed at the vertices of an isosceles right angled triangle. Which of the numbered vectors coincides in direction with the electric field at the mid-point M of the hypotenuse

    Physics-General
    General
    Physics-

    Electric field strength due to a point charge of 5 mu C at a distance of 80 cm from the charge is

    Electric field strength due to a point charge of 5 mu C at a distance of 80 cm from the charge is

    Physics-General
    General
    Physics-

    What is the potential energy of the equal positive point charges of 1 mu C each held 1 m apart in air

    What is the potential energy of the equal positive point charges of 1 mu C each held 1 m apart in air

    Physics-General
    parallel
    General
    Physics-

    Four charges are placed on corners of a square as shown in figure having side of 5 c m. If Q is one microcoulomb, then electric field intensity at centre will be

    Four charges are placed on corners of a square as shown in figure having side of 5 c m. If Q is one microcoulomb, then electric field intensity at centre will be

    Physics-General
    General
    Physics-

    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

    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

    Physics-General
    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
    parallel
    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
    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
    parallel
    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
    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
    parallel
    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
    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
    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.