1.
Two identical conducting spheres carry charges +6 μC and –2 μC respectively. They are brought into contact and then separated. The final charge on each sphere is
2.
The SI unit of electric field is
3.
The electric field at the centre of a uniformly charged circular ring is
4.
If the distance between two point charges is doubled, the electrostatic force becomes
5.
The electric field inside a conductor in electrostatic equilibrium is
6.
The permittivity of free space is
7.
Coulomb's law is valid for
8.
The electric field due to a positive point charge is directed
9.
Electric field lines never
10.
The force between two charges is independent of
11.
A proton is placed in a uniform electric field. It experiences
12.
The electric field due to an infinitely long uniformly charged wire varies as
13.
A Gaussian surface encloses no charge. The net electric flux is
14.
The electric field at a point on the axial line of an electric dipole decreases as
15.
The electric field at a point on the equatorial line of a dipole is directed
16.
The SI unit of electric flux is
17.
The number of electric field lines passing normally through a surface represents
18.
According to Gauss's law, electric flux depends upon
19.
Two equal positive charges are placed symmetrically. At the midpoint, the electric field is
20.
The electric field due to a uniformly charged infinite plane sheet is
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