Home
Class 12
PHYSICS
Short electric dipole of dipole moment P...

Short electric dipole of dipole moment P is placed at the centre of a ring of radius R having charge Q uniformly distributed on its circumference. The dipole moment vector is along the axis of the ring. Find force on the dipole due to the ring.

Text Solution

Verified by Experts

The correct Answer is:
`(PQ)/(4pi in_(0)R^(3))`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

Calculate potential on the axis of a ring due to charge Q uniformly distributed along the ring of readius R.

An electric dipole is placed at a distance x from centre O on the axis of a charged ring of radius R and charge Q uniformly distributed over it. (a) Find the net force acting on the dipole (b) What is the work done in rotating the dipole through 180^(@) ? [(a) (aqQ)/(2piepsilon_(0))((R^(2)-2x^(2))/((R^(2)+x^(2))^(3//2))), (b) (aqQx)/(piepsilon_(0)(R^(2)+x^(2))^(3//2))]

Knowledge Check

  • A dipole of dipole moment P is kept at the centre of a ring of radius R and charge Q the dipole moment has direction along the ring due to the dipole is :

    A
    zero
    B
    `(kpQ)/(R^(3))`
    C
    `(2kpQ)/(R^(3))`
    D
    `(kpQ)/(R^(3))` only if the change is uniformly distributed on the ring .

  • An electric dipole of dipole moment p is placed in a uniform external electric field E. Then, the

    A
    toeque experienced by the dipole is `E xxp`
    B
    torque is zero, if p is perpendicular to E
    C
    torque is maximum, if p is perpendicular to E
    D
    potential energy is maximum, if p is parallel to E

  • As shown in the figure an electric dipole lies at a distance x from the centrr of a chargerd ring of radius R with charge Q uniformly distributed over it .The net force acting on the dipole is

    A
    `(aQq)/(4piepsilon_(0))(R^(2)-2x^(2))/(2piepsilon_(0)(R^(2)+x^(2))^(5//2))`
    B
    `(aQq)/(2piepsilon_(0))(R^(2)+2x^(2))/(2piepsilon_(0)(R^(2)+x^(2))^(5//2))`
    C
    `(aQq)/(4piepsilon_(0))(R^(2)+2x^(2))/(2piepsilon_(0)(R^(2)+x^(2))^(5//2))`
    D
    `(aQq)/(2piepsilon_(0))(R^(2)-2x^(2))/(2piepsilon_(0)(R^(2)+x^(2))^(5//2))`

    • Similar Questions

    Explore conceptually related problems

    A short dipole of dipole moment P is placed near a point charge Q as shown in figure. Find force on the dipole due to the point charge

    A short dipole of dipole moment P is placed near a point charge Q as shown in figure. Find force on the dipole due to the point charge

    Electric charge Q is uniformly distributed around a thin ring of radius a. find the potential a point P on the axis of the ring at a distance x from the centre of the ring .

    What is the force on a dipole of dipole moment p placed as shown in fig.

    An electric dipole is placed along x -axis with its centre at origin:

    Home
    Profile