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1.
Two point charges 
and 
are fixed on the 
-axis at positions 
and 
from origin respectively. At what positions on the axis, the resultant electric field is zero
and are fixed on the -axis at positions and from origin respectively. At what positions on the axis, the resultant electric field is zero
2.
A hollow sphere of charge does not produce an electric field at any
3.
Plates of area 
are arranged as shown. The distance between each plate is 
the net capacitance is
are arranged as shown. The distance between each plate is the net capacitance is
4.
Two point charges 
and 
are located at points 
and 
, respectively. The potential at a point 
where 
a is
and are located at points and , respectively. The potential at a point where a is
5.
A capacitor of capacitance 
is charged upto 
The energy stored in the capacitor is
is charged upto The energy stored in the capacitor is
6.
Charges 5
C and 10C are placed 1 m apart. Work done to bring these charges at a distance 0.5 m from each other is
C and 10C are placed 1 m apart. Work done to bring these charges at a distance 0.5 m from each other is
7.
In the following circuit, the resultant capacitance between and 
is 
Then value of 
is
and is Then value of is
8.
The electric dipole moment of an electron and a proton 4.3 nm apart is
9.
If the circumference of a sphere is 
then capacitance of sphere in water would be
then capacitance of sphere in water would be
10.
A charge 
is enclosed by a Gaussian spherical surface of radius 
If the radius is doubled, then the outward electric flux will
is enclosed by a Gaussian spherical surface of radius If the radius is doubled, then the outward electric flux will