Two charges 1µc and 5µc separate by 20 cm, the ratio of electoral forces acting on them will be:

The Constant of proportionality “k” depenupon:

The force between two similar unit charges placeone meter apart in air is:

The electrostatic between two charges is 42 N. If we place dielectric E_r = 2.1 between the charges then the force become equal to:

The electrostatic force of repulsion between two electrons at a distance 1 m is:

Numerical value of permittivity of free space is:

SI Unit of permittivity of free space are:

The SI unit of relative permittivity is:

Relative permittivity for air is:

The number of electrons in one coulomb charge is equal to:

Presence of dielectric always:

For which material medium, force between two charges particles is maximum?

If the medium between the charges is not free space then electrostatiforce will:

SI unit of thermal conductivity is:

On Fahrenheit scale, the interval molecules between lower and upper fixed points is divided into _____ equal parts.

In which of the following the molecules do not leave their mean position?

Pressure of 76cm of mercury column is _____ Pa.

A body of mass 50kg is raised to a height of 3m. What is its potential energy?

The value of g on moon's surface is 1.6ms². What will be the weight of a 100kg body on the surface of the moon?

If F - 200 N and ϴ = 30° with horizontal then what will be the value of F_x?