Physics M.C.Q (1 Marks)

The electric flux on a Gaussian spherical surface of radius 15 cm, drawn with a point charge as the centre, is ф. If the radius of this surface is tripled, then the electric flux passing through the surface will be:

The value of dielectric strength for air is:

The SI value of electrical conductivity of free space or vacuum is:

The SI unit of electric flux is:

The magnitude of the electric field due to a point charge at a distance of 4.0 m is 9 N/C. Distance of this point charged substance due to electric field of magnitude 16 N/C will be:

If charge Q is located at the centre of the cube, then the electric flux emerging out of one face of the cube will be:

The state of charge inside a closed surface is changed in such a way that total charge remains constant, the flow of electric flux from the closed surface:

If an electric dipole is placed in a non-uniform electric field then :

Gauss's law in dielectric medium:

A charged conducting sphere does not produce an electric field:

Due to a dipole, the field at a distance r on its axial line and the field at a distance r on its perpendicular bise- ctor (non-axis line) will be produced:

For which regions is Gauss' law true?

An electric dipole placed in a uniform elecrtric field exepriences:

If the distance between H and Cl in HCl molecule is 1.28 A, then the value of electric dipole moment of this molecule will be (in Coulomb-meter):

The formula of torque due to electric dipole is:

The unit of electric field intensity is:

The unit of dipole moment is:

Charges of + 10 Coulombs are placed at both corners of one diagonal of a square and charges of -10 coulomb are placed at the other two corners, then at the centre of the square:

The intensity of the field generated at a point due to an electric dipole is directly proportional to:

Two charged spheres of radii R, and R2 are connected by a wire. The ratio of the electric fields of the spheres is:

The force between two charges is F. If the distance between them is tripled, the electric force between these charges wll be:

Indirect method of charging is:

Compared to the electric force between two elec- trons, the electrostatic force between two protons is:

Which of the following statements related to static electricity is not true?

How many electrons will there be in one coulomb of charge?

The force between unlike charges is:

The reason for the energy associated with a moving charge is:

One conducting sphere has 50e charge and the other identical sphere has + 20e charge. If both the sphere are touched and separated, then the charge on each will be:

If an electric dipole is placed in an electric field, then the value of the torque acting on it will be:

The force between point charges kept in vacuum is 18 Newton. If a glass plate of dielectric constant 6 is placed between these charges, then the value of force will be:

When a soap bubble is negatively charged, its radius is:

An object can be negatively charged by: