Electrostatics day 3

Dipole moment depends on

• Charge only

• Charge and length of a dipole

• Charge and dielectric constant of the medium

• Charge, length and dielectric constant of the medium.

If electric field intensity at a certain distance from a dipole on its axis is E₁ and at the same distance but on the perpendicular bisector of the dipole is E₂, then

• E₁= E₂

• E₁= 2E₂

• E₁ = 3E₂

• E₁ = 4E₂

The electric field at a point on the perpendicular bisector of a dipole is directed_________

• Along the dipole moment

• Perpendicular to the dipole moment

• Opposite to the dipole moment

• 45° to the dipole moment

An electric dipole is placed inside a cube. What will be the nature of electric flux from the cube surface?

• Coming out of the surface.

• Coming in towards the surface.

• No flux at all.

• Coming out from one half and coming inwards in another half.

The potential due to a dipole at a point P from it is the

• Sum of the potentials due to the charges.

• Difference of the potentials due to the charges.

• Multiplication of the potentials due to the charges.

• Ratio of the potentials due to the charges.

What is the number of electric field lines coming out from a 1 C charge?

• Infinite

Gauss’s Law is applicable only in the case of the electric field. This statement is

• True

• False

A non-conducting sphere has uniform charge density in it. The electric field at a point inside the sphere will be _______

• Zero

• Only due to the charge inside that point

• Only due to the charge outside that point

• Due to the entire charge of the sphere

Electric field outside this Gaussian surface will be ___________

• Only from q₂

• Only from positive charges

• Zero

• From all the charges

Which statement is true for Gauss law?

• All the charges whether inside or outside the gaussian surface contribute to the electric flux.

• Electric flux depends upon the geometry of the gaussian surface.

• Gauss theorem can be applied to non-uniform electric field.

• The electric field over the gaussian surface remains continuous and uniform at every point.