Which of the following is correct for permittivity of free space?

Which of the following is correct for quantisation of charge?

The value of $\frac{1}{4\pi {\epsilon }_0}\backslash frac1\{4\backslash pi\backslash varepsilon\_0\}$ is equal:

As shown in figure, the electric field lines represent due to charge:

Which of the following is not properties of filed lines?

For (r >> a), the field of an electric dipole on the axis is proportional to distance.

Which of the following equation represents Gauss’s law?

Field due to a uniformly charged infinite plane sheet will be:

The dimension formula of dipole moment is:

The ratio of electric force and gravitational force between a proton and an electron is:

The Electric field due to thin infinitely long straight wire of uniform charged wire will be:

At all point inside the shell electric field will be:

The dimension formula of electric flux is:

Which one of the following is the unit of electric field?

The dielectric constant of a metal is: