Polarisation Of Dielectrics MCQ Level - 1 - Physics MCQ

electric susceptibility 

electric polarization

dielectric constant

magnetic susceptibility

Displacement / separation of opposite charge centers

Passing of current through dielectric

Excitation of electron to higher energy level 

All of the above

the earthing of the outer sphere is removed

vacuum is created between two spheres 

the space between two spheres is increased

dielectric material is filled between the two spheres

4KC_o/K + 2

4KC_o/1 + 2K

4KC_o/K + 3

4KC_o/1 + 3K

only charges of a surface density 

only charges of volume density 

charges of a volume density and surface charges of density ρ_b is given by 

charges of volume density  and surface 

They are necessarily anisotropic in a nature

Their polarization is mainly caused by the torque due to the external field tending to align their ‘permanent’ dipoles in a direction parallel to the field 

Their polarization is mainly caused by the relative separation of the positive charges within the individual molecule by external field

All of the above

The normal component of  and normal component of  are always the same on each side of the boundary

The tangential component of  and the normal component of   is same on each side of the boundary. The latter condition is however, valid only in the absence of any free charges on the interface

Tangential component of  and normal component of  are always the same on each side of the boundary

None of these

E_T

∞

0

2E_T

similar in an electrostatic field and in a varying electric field.

different for static and varying field but is independent of the frequency

different for static and varying field and is very much depend on the frequency    

None of the above