Interesting facts about Dielectrics and Polarisation thumbnail
Interesting facts about Dielectrics and Polarisation thumbnail

Interesting facts about Dielectrics and Polarisation

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1 Question
πριν 30 δευτερόλεπτα
Q.

What is the forbidden energy gap of a dielectric?


Less than 1.2 eV

Greater than to 1.2 eV

Less than 3 eV

Equal to 4 eV

2 Question
πριν 30 δευτερόλεπτα
Q.

What is the torque acting on a dipole in a uniform magnetic field?


T = mB2lsinθ

T = mB3lsinθ

T = mB4lsinθ

T = mB5lsinθ

3 Question
πριν 30 δευτερόλεπτα
Q.

When is the angle between the dipole and the field?


150 degrees

120 degrees

80 degrees

180 degrees

4 Question
πριν 30 δευτερόλεπτα
Q.

What is the value of 1 Debye in cm?


3.33 X 10-28 cm

 3.335× 10-30 C m

3.33 X 10-32 cm

3.33 X 10-34 cm

5 Question
πριν 30 δευτερόλεπτα
Q.

What is the symbol of electric susceptibility?


Xe

Xs

Ys

Ye

6 Question
πριν 30 δευτερόλεπτα
Q.

What is the new capacitance of the plates if dielectric constant K and plate separation of thickness one-fourth of the thickness are inserted between the plates?


(K+2)C4

4KCo/1 + 5K

4KCo/K + 3

4KCo/1 + 3K

7 Question
πριν 30 δευτερόλεπτα
Q.

What is the expression for electric susceptibility ?


Xe = P/E

EK

E (K + 1)

E (K – 1)

8 Question
πριν 30 δευτερόλεπτα
Q.

What is the polarization produced when a sheet of polystyrene 0.5 mm thick is subjected to 220 V?


2.78 X 10-6 C/m

3.91 X 10-6 C/m

4.12 X 10-6 C/m

5.84 X 10-6 C/m

9 Question
πριν 30 δευτερόλεπτα
Q.

How many Dielectric Properties of Solids are there?


3

5

4

2

10 Question
πριν 30 δευτερόλεπτα
Q.

What is the non-polar dielectric element?


Nitrogen 

Zinc

Methane

Helium