Advertisements
Advertisements
प्रश्न
Write the general definition of electric dipole moment for a collection of point charge.
उत्तर
The electric dipole moment vector lies along the line joining two charges and is directed from -q to + q. The SI unit of dipole moment is a coulomb meter (Cm).
`vec"P" = "qa" hat"i" - "qa"(- hat"i") = 2 "qa" hat"i"`
APPEARS IN
संबंधित प्रश्न
Two identical point charges of magnitude –q are fixed as shown in the figure below. A third charge +q is placed midway between the two charges at the point P. Suppose this charge +q is displaced a small distance from the point P in the directions indicated by the arrows, in which direction(s) will +q be stable with respect to the displacement?
An electric dipole is placed at an alignment angle of 30° with an electric field of 2 × 105 NC-1. It experiences a torque equal to 8 Nm. The charge on the dipole if the dipole length is lcm is ______.
Define ‘electric dipole’.
Give the expression for the magnitude of its electric dipole moment and the direction.
Calculate the electric field due to a dipole on its axial line and equatorial plane.
Derive an expression for the torque experienced by a dipole due to a uniform electric field.
Consider an electron travelling with a speed VΦ and entering into a uniform electric field `vec"E"` which is perpendicular to `vec"V"_0` as shown in the Figure. Ignoring gravity, obtain the electron’s acceleration, velocity and position as functions of time.
