  Easy Questions

## Electric Charges And Fields

- It is always better to start confident. Let's practice easy questions to serve the purpose
1
Two identical pendulums and are suspended from the same point. Both are given a positive charge, with having more charge than . They diverge and reach equilibrium with the strings of pendulums and making angles and with the vertical respectively. Then:
A
>
B
<
C
D
the tension in A is greater than that in B
Six charges are placed at the corner of a regular hexagon as shown. If an electron is placed at the centre O, force on it will be:
A
zero
B
along OF
C
along OC
D
none of these
charges are placed each at a distance 'a' from origin. The dipole moment of configuration is :
A
B
C
D
none
and are two points on the axis and the perpendicular bisector respectively of a electric dipole. and are far away from the dipole and at equal distance from it. The field at and are :
A
B
C
D
An electric dipole is placed in a uniform electric field. The net electric force on the dipole
A
is always zero
B
depends on the orientation of the dipole
C
depends on the dipole moment
D
is always finite but not zero
Two large parallel planes charged uniformly with surface charge densities and are located as shown in the figure. Which one of the following graphs shows the variation of electric field along a line perpendicular to the planes as one moves from A to B?
A
B
C
D
When a negative charge is released and moves in electric field, it moves toward a position of :
A
lower electric potential and lower potential energy
B
lower electric potential and higher potential energy
C
higher electric potential and lower potential energy
D
higher electric potential and higher potential energy
A closed surface in the shape of a cube is placed in a uniform electric field along one of the sides of the cube as shown here. The length of the side is . The total electric flux through two faces 1 and 2 is:
A
zero
B
C
D
If the electric flux entering and leaving an enclosed surface respectively are and the electric charge inside the surface will be:
A
B
C
D

A cylinder of radius R and length L is placed in the uniform electric field E parallel to the cylinder axis. The total flux from the curved surface of the cylinder is given by :

A
B
C
D