For distance far away from centre of dipole the change in magnitude of electric field with change in distance from the centre of dipole is:
zero.
same in equatorial plane as well as axis of dipole.
more in case of equatorial plane of dipole as compared to axis of dipole.
more in case of axis of dipole as compared to equatorial plane of dipole.
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For distances far away from centre of dipole
From equations (i) and (ii) the magnitude of change in electric field w.r.t. distance is more in case of axis of dipole as compared to equatorial plane.
The direction of electric field at a point on equatorial line of a dipole & its dipole moment
will be parallel
will be in opposite direction
will be perpendicular
are not related
The direction of electric field at equatorial point or will be in opposite direction, as that of direction of dipole moment:
If a dipole of dipole moment is placed in a uniform electric field , then torque acting on it is given by
Given : Dipole moment of the dipole and uniform electric field . We know that dipole moment (p) (where is the charge and is dipole length). And when a dipole of dipole moment is placed in uniform electric field , then Torque Either force perpendicular distance between the two forces or or (vector form).
If be the electric field strength of a short dipole at a point on its axial line and that on the equatorial line at the same distance, then
None of these
We have and .
When an electric dipole is placed in a uniform electric field then at what angle between and the value of torque will be maximum?
An electric dipole has a pair of equal and opposite point charges and separated by a distance . The axis of the dipole is
from positive charge to negative charge
from negative charge to positive charge
perpendicular to the line joining the two charges drawn at the centre and pointing upward direction
perpendicular to the line joining the two charges drawn at the centre and pointing downward direction
The electric intensity due to a dipole of length and having a charge of , at a point on the axis at a distance from one of the charges in air, is
Given : Length of the dipole or
Charge on the dipole and distance of the point on the axis from the mid-point of the dipole .
We know that the electric field intensity due to dipole on the given point
for air
Intensity of an electric field depends on distance , due to a dipole, is related as
Intensity of electric field due to a Dipole
An electric dipole, consisting of two opposite charges of each separated by a distance is placed in an electric field of . Torque acting on the dipole is
Charges (q) , Distance (d) and electric field . Torque . .
Two identical electric dipoles are arranged on -axis as shown in figure. Electric field at the origin will be
Zero
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