Electrostatics Quiz 1

Force between two charges separated by a certain distance in air is F. If each charge is doubled and the distance between them is also doubled, force would be

For what order of distance is Coulomb's law true?

The permittivity of medium is $26.55\times10^{-12}C^2/Nm^2.$ The dielectric constant of the medium will be

A glass rod when rubbed with a piece of fur acquires a charge of magnitude $3.2 \ \mu C$. The number of electrons transferred is

Choose the correct answer

If a charge is moved against the Coulomb force of an electric field,

Two point charges $+4 \ \mu C$ and $+2 \ \mu C$ repel each other with a force of 8 N. If a charge of $-4 \ \mu C$ is added to each of these charges, the force would be

The electric field intensity at a point 2 m from an isolated point charge is 500 N/C. The electric potential at the point is

The dimensional formula of electric field intensity is

A force of 2.25 N acts on a charge of $15 \times 10^{-4}$C. Calculate the intensity of electric field at that point.