[I] Choose Correct
Answers
1. In
dielectrics, the polarization is
(a) Linear function of
applied electric field
(b) Square function of
applied electric field
(c) Exponential
function of applied electric field
(d) None of the above.
(AKTU. 2008-09)
2. The
Clausius-Mossotti relation is (AKTU. 2008-09)
(a)
(b) 
(b)
(c)
(d) .
(d) .
3. The property of becoming electrically polarized when mechanical
stress is applied is known as
(a)
ferro-electric (b)
piezo-electric
(c) pyro-electric (d) none of
these
4. Piezo-electricity is due to
(a)
increase in charges (b)
decrease in charge
(c)
disappearance of charge (d)
distortion of charge symmetry.
5. Dielectric medium should have the property
(a) high
dielectric constant (b)
high specific resistance
(c) high
dielectric strength (d)
all
6. Which
of the following is not equal to the dielectric constant. (AKTU. 2009-10)
7. In
an isotropic dielectric medium. (AKTU. 2009-10)
(a) D and E are pendicular to each other
(b) D and E are
inclined at 45o to each other
(c) D and E have the
same direction
(d) D and P are
perpendicular to each other
8. For a given dielectric, as the temperature increases, the ionic
polarizability:
(a) Increases (b)
Decreases
(c) First increases then
decreases (d) Remain unchanged. (2010 - 11)
9. Magnetic field can be produced due to:
(a) Moving charge (b) Time varying
of electric field
(c) Current (d)
All the above (2010 -
11)
[II] Fill in the
Blanks
1. Dielectrics are ………….. materials.
2. Piezoelectricity is due to polarization of dielectric under ……….
