Physics-
General
Easy

Question

The distance between the two charges +q and -q of a dipole is r. On the axial line at a distance d from the centre of dipole, the intensity is proportional to

  1. fraction numerator q over denominator d to the power of 2 end exponent end fraction    
  2. fraction numerator q r over denominator d to the power of 2 end exponent end fraction    
  3. fraction numerator q over denominator d to the power of 3 end exponent end fraction    
  4. fraction numerator q r over denominator d to the power of 3 end exponent end fraction    

The correct answer is: fraction numerator q r over denominator d to the power of 3 end exponent end fraction


    Field along the axis of the dipole
    E equals fraction numerator 1 over denominator 4 pi epsilon subscript 0 end subscript end fraction. fraction numerator 2 p over denominator d to the power of 3 end exponent end fraction equals fraction numerator 1 over denominator 4 pi epsilon subscript 0 end subscript end fraction. fraction numerator 2 left parenthesis q cross times r right parenthesis over denominator d to the power of 3 end exponent end fraction semicolon \ E proportional to fraction numerator q r over denominator d to the power of 3 end exponent end fraction

    Related Questions to study

    General
    Physics-

    In the following diagram the work done in moving a point charge from point P to point A, B and C is respectively as WA, WB and WC , then

    In the following diagram the work done in moving a point charge from point P to point A, B and C is respectively as WA, WB and WC , then

    Physics-General
    General
    Physics-

    Four point +ve charges of same magnitude (Q) are placed at four corners of a rigid square frame as shown in figure. The plane of the frame is perpendicular to Z ̶axis. If a –ve point charge is placed at a distance z away from the above frame (z<<L) then

    Four point +ve charges of same magnitude (Q) are placed at four corners of a rigid square frame as shown in figure. The plane of the frame is perpendicular to Z ̶axis. If a –ve point charge is placed at a distance z away from the above frame (z<<L) then

    Physics-General
    General
    Physics-

    A charged ball B hangs from a silk thread S, which makes an angle theta with a large charged conducting sheet P, as shown in the figure. The surface charge density sigma of the sheet is proportional to

    A charged ball B hangs from a silk thread S, which makes an angle theta with a large charged conducting sheet P, as shown in the figure. The surface charge density sigma of the sheet is proportional to

    Physics-General
    parallel
    General
    Physics-

    To charges q subscript 1 end subscript and q subscript 2 end subscript are placed 30 c m apart, shown in the figure. A third charge q subscript 3 end subscriptis moved along the arc of a circle of radius 40cm from C to D. The change in the potential energy of the system is fraction numerator q subscript 3 end subscript over denominator 4 pi epsilon subscript 0 end subscript end fraction k, where k is

    To charges q subscript 1 end subscript and q subscript 2 end subscript are placed 30 c m apart, shown in the figure. A third charge q subscript 3 end subscriptis moved along the arc of a circle of radius 40cm from C to D. The change in the potential energy of the system is fraction numerator q subscript 3 end subscript over denominator 4 pi epsilon subscript 0 end subscript end fraction k, where k is

    Physics-General
    General
    Physics-

    As per this diagram a point charge +q is placed at the origin O. Work done in taking another point charge -Q from the point A [co-ordinates (0,a)] to another point B [co-ordinates (a, 0)] along the straight path AB is

    As per this diagram a point charge +q is placed at the origin O. Work done in taking another point charge -Q from the point A [co-ordinates (0,a)] to another point B [co-ordinates (a, 0)] along the straight path AB is

    Physics-General
    General
    Physics-

    Figure shows three points A, B and C in a region of uniform electric field Error converting from MathML to accessible text.. The line AB is perpendicular and BC is parallel to the field lines. Then which of the following holds good. Where V subscript A end subscript comma V subscript B end subscript and V subscript C end subscript represent the electric potential at points A, B and C respectively

    Figure shows three points A, B and C in a region of uniform electric field Error converting from MathML to accessible text.. The line AB is perpendicular and BC is parallel to the field lines. Then which of the following holds good. Where V subscript A end subscript comma V subscript B end subscript and V subscript C end subscript represent the electric potential at points A, B and C respectively

    Physics-General
    parallel
    General
    Physics-

    The points resembling equal potentials are

    The points resembling equal potentials are

    Physics-General
    General
    Physics-

    Charges q, 2q, 3q and 4q are placed at the corners A, B, C and D of a square as shown in the following figure. The direction of electric field at the centre of the square is along

    Charges q, 2q, 3q and 4q are placed at the corners A, B, C and D of a square as shown in the following figure. The direction of electric field at the centre of the square is along

    Physics-General
    General
    Physics-

    There are two equipotential surface as shown in figure. The distance between them is r. The charge of –q coulomb is taken from the surface A to B, the resultant work done will be

    There are two equipotential surface as shown in figure. The distance between them is r. The charge of –q coulomb is taken from the surface A to B, the resultant work done will be

    Physics-General
    parallel
    General
    Physics-

    The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0cross times 1 0 to the power of negative 13 end exponent cm is

    The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0cross times 1 0 to the power of negative 13 end exponent cm is

    Physics-General
    General
    Physics-

    A hollow conducting sphere is placed in an electric field produced by a point charge placed at P as shown in figure. Let V subscript A end subscript comma V subscript B end subscript comma V subscript C end subscript be the potentials at points A,B and C respectively. Then

    A hollow conducting sphere is placed in an electric field produced by a point charge placed at P as shown in figure. Let V subscript A end subscript comma V subscript B end subscript comma V subscript C end subscript be the potentials at points A,B and C respectively. Then

    Physics-General
    General
    Physics-

    A drop of 1 0 to the power of negative 6 end exponent k g water carries 1 0 to the power of negative 6 end exponent C charge. What electric field should be applied to balance its weight (assume g equals 10 m divided by s to the power of 2 end exponent right parenthesis

    A drop of 1 0 to the power of negative 6 end exponent k g water carries 1 0 to the power of negative 6 end exponent C charge. What electric field should be applied to balance its weight (assume g equals 10 m divided by s to the power of 2 end exponent right parenthesis

    Physics-General
    parallel
    General
    Physics-

    Three charges Q,(+q) and (+q) are placed at the vertices of an equilateral triangle of side l as shown in the figure. If the net electrostatic energy of the system is zero, then Q is equal to

    Three charges Q,(+q) and (+q) are placed at the vertices of an equilateral triangle of side l as shown in the figure. If the net electrostatic energy of the system is zero, then Q is equal to

    Physics-General
    General
    Physics-

    Two small spherical balls each carrying a charge Q equals 10 mu C (10 micro-coulomb) are suspended by two insulating threads of equal lengths 1m each, from a point fixed in the ceiling. It is found that in equilibrium threads are separated by an angle 6 0 to the power of o end exponent between them, as shown in the figure. What is the tension in the threads (Given: fraction numerator 1 over denominator left parenthesis 4 pi epsilon subscript 0 end subscript right parenthesis end fraction equals 9 cross times 1 0 to the power of 9 end exponent N m divided by C to the power of 2 end exponent)

    Two small spherical balls each carrying a charge Q equals 10 mu C (10 micro-coulomb) are suspended by two insulating threads of equal lengths 1m each, from a point fixed in the ceiling. It is found that in equilibrium threads are separated by an angle 6 0 to the power of o end exponent between them, as shown in the figure. What is the tension in the threads (Given: fraction numerator 1 over denominator left parenthesis 4 pi epsilon subscript 0 end subscript right parenthesis end fraction equals 9 cross times 1 0 to the power of 9 end exponent N m divided by C to the power of 2 end exponent)

    Physics-General
    General
    Physics-

    A charge (-q) and another charge (+Q) are kept at two points A and B respectively. Keeping the charge (+Q) fixed at B, the charge (-q) at A is moved to another point C such that ABC forms an equilateral triangle of side l. The net work done in moving the charge (-q) is

    A charge (-q) and another charge (+Q) are kept at two points A and B respectively. Keeping the charge (+Q) fixed at B, the charge (-q) at A is moved to another point C such that ABC forms an equilateral triangle of side l. The net work done in moving the charge (-q) is

    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.