Physics-
General
Easy

Question

Two charges plus 3.2 cross times 1 0 to the power of negative 19 end exponent C and negative 3.2 cross times 1 0 to the power of negative 9 end exponent C kept 2.4 text Å end text apart forms a dipole. If it is kept in uniform electric field of intensity 4 cross times 1 0 to the power of 5 end exponent v o l t rightwards arrow over short leftwards arrow divided by rightwards arrow over short leftwards arrow m then what will be its electrical energy in equilibrium

  1. plus 3 cross times 1 0 to the power of negative 23 end exponent J    
  2. negative 3 cross times 1 0 to the power of negative 23 end exponent J    
  3. negative 6 cross times 1 0 to the power of negative 23 end exponent J    
  4. negative 2 cross times 1 0 to the power of negative 23 end exponent J    

The correct answer is: negative 3 cross times 1 0 to the power of negative 23 end exponent J


    Potential energy of electric dipole
    U equals negative p E cos invisible function application theta equals negative left parenthesis q cross times 2 l right parenthesis E cos invisible function application theta
    U equals negative left parenthesis 3.2 cross times 1 0 to the power of negative 19 end exponent cross times 2.4 cross times 1 0 to the power of negative 10 end exponent right parenthesis 4 cross times 1 0 to the power of 5 end exponent cos invisible function application theta
    U equals negative 3 cross times 1 0 to the power of negative 23 end exponent (approx.)

    Related Questions to study

    General
    Physics-

    Two electric dipoles of moment P and 64 P are placed in opposite direction on a line at a distance of 25 cm. The electric field will be zero at point between the dipoles whose distance from the dipole of moment P is

    Two electric dipoles of moment P and 64 P are placed in opposite direction on a line at a distance of 25 cm. The electric field will be zero at point between the dipoles whose distance from the dipole of moment P is

    Physics-General
    General
    Maths-

    If A and B are two independent events in a sample space S then P left parenthesis A intersection B right parenthesis equals

    If A and B are two independent events in a sample space S then P left parenthesis A intersection B right parenthesis equals

    Maths-General
    General
    Maths-

    The probability of an impossible event is

    The probability of an impossible event is

    Maths-General
    parallel
    General
    Physics-

    An electric dipole in a uniform electric field experiences (When it is placed at an angle theta with the field)

    An electric dipole in a uniform electric field experiences (When it is placed at an angle theta with the field)

    Physics-General
    General
    Physics-

    An electron and a proton are at a distance of 1 Å. The moment of this dipole will be (C cross times m)

    An electron and a proton are at a distance of 1 Å. The moment of this dipole will be (C cross times m)

    Physics-General
    General
    Physics-

    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

    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

    Physics-General
    parallel
    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

    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.