2nd Year Physics Chapter 12 Solved Past Papers Important MCQS,Most repeated question repeated in every year.
1. The electric field created by positive charge is:
(a) Radially outward (b) Zero (c) Circular (d) Radially inward
2. Electric lines of force are parallel and equally spaced, then the electric field is:
(a) Weak (b) Strong (c) Non-Uniform (d) Uniform
3. Coulomb’s law is only applicable for
(a) Big charges (b) Small charges (c) Point charges
4. If the distance between two point charges is doubled, the force between them will become:
(a) Doubled (b) Half (c) One forth
5. The constant k in Coulomb’s Law depends upon
(a) Nature of medium (b) System of units (c) Intensity of charge (d) Both a & b
6. Presence of dielectric always:
(a) Increases the electrostatic force (b) Decreases the electrostatic force
(c) Does not effect the electrostatic force (d) Doubles the electrostatic force
7. The value of relative permitivity for all the dielectrics is always:
(a) Less than unity (b) Greater than unity (c) Equal to unity
8. Relative permitivity of air is:
(a) 1.06 (b) 1.006 (c) 1.0006
9. If the magnitude of charges and distance between them is doubled, then the force will be:
(a) Doubled (b) Halved (c) Remain same
10. When an insulating medium is placed between two charges, the electrostatic force:
(a) Increases (b) decreases (c) zero (d) Remain Same
11. The electrostatic force between two charges is 42 N. If we place a dielectric of , between
the charges, then the force become equal to:
(a) 42N (b) 88.2 N (c) 2 N (d) 20 N
12. A charge at rest creates around it
(a) Electric field (b) Magnetic field (c) Gravitational field (d) Nuclear field
13. The force experience by a unit positive charge placed at a point in an electric field is called:
(a) Coulomb’s force (b) Faraday’s force (c) Lorentz’s force (d) Electric field intensity
14. If we move away from a charge, the magnitude to electric intensity
(a) Remains constant (b) Increases (c) Decreases (d) Vanish
15. Of the following quantities, the one that is vector in character is an
(a) Electric Charge (b) Electric Field Intensity
(c) Electric Energy (d) Electric Potential Difference
16. The electric intensity at infinite distance from point charge is
(a) Infinite (b) zero (c) positive (d) negative
17. The lines which provide information about the electric force exerted on charged particles are:
(a) Magnetic field lines (b) Electric field lines (c) Tangent lines (d) Curved lines
18. Electric field lines are
(a) Actual Line (b) Imaginary Lines (c) Solid Lines (d) None of These
19. The tangent to a field line at any point gives the direction of
(a) Electric Intensity (b) Electric Flux (c) Vector Area (d) Electric Current
20. The electric field lines are closer where the field is:
(a) Strong (b) Weak (c) Uniform (d) Variable
21. Electric field lines can never
(a) Attract each other (b) Repel each other (c) Intersect each other
22. The electric field produced due to negative charge is always:
(a) Radially outward (b) Radially inward (c) Circular (d) Zero
23. Solid bodies are charged due to the transfer of:
(a) Protons (b) Electrons (c) Neutrons
24. The SI unit if elelctric charge is:
(a) Volt (b) Henry (c) Coulomb