MCQ Electrostatics of Dielectrics, Class 12 Physics

1. There will be total 10 MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying

1. 1 microfarad is equal to

10^-6F

10^-12F

10^-15F

10^-9F

Your comments:

Question 1 of 10

2. 1pF is equal to

10¹²F

10^-12F

10⁶F

10⁶F

Your comments:

Question 2 of 10

3. The polarized dielectric is equivalent to

non-zero volume charge density

one charged surface with induced surface charge density

two charged surfaces with induced surface charge densities

zero surface charge density

Your comments:

Question 3 of 10

4. Which of the following statements is not true for polar molecules?

permanent dipole moment

examples are oxygen and hydrogen molecules

the centres of positive and negative charges are separated

examples are HCl or water molecules

Your comments:

Question 4 of 10

5. The extent of polarization depends on

Kinetic energy of bound charges

Dipole potential energy

Dipole potential energy and thermal energy

Thermal energy

Your comments:

Question 5 of 10

6. A uniformly polarized dielectric amounts to induced ______ charge density but no ______charge density.

volume, surface

surface, volume

volume, line

line, volume

Your comments:

Question 6 of 10

7. When a conductor is placed in an electric field; its free charge carriers adjust itself in order to oppose the electric field. This happen until

Both the fields cancel out each other

Induced field become more than external field

External field reach the maximum value

Induced field reach the maximum value

Your comments:

Question 7 of 10

8. The dipole moment per unit volume is called

Polarization

Surface charge density

Linear charge density

Volume charge density

Your comments:

Question 8 of 10

9. The displacement of charges inside the dielectric stops when

the external field becomes maximum

the external force on the charges of the molecules is balanced by the force due to internal fields

the internal force on the charges of the molecules is balanced by the forces due to the internal fields

none of the above

Your comments:

Question 9 of 10

10. The electric field inside a dielectric decreases, when it is placed in an external electric field. This happens due to

Electrostatic shielding

Polarization

Electrostatic repulsion between atoms

Electrostatic attraction between atoms

Your comments:

Question 10 of 10

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