2nd Year Physics | Electrostatics | Quiz Version-1

• 2nd Year Physics | Electrostatics | Quiz Version-1.
• This quiz is from Physics FSc ICS Part-II | 2nd Year, Chapter No.12: Electrostatics.

• We tried our best to make/select maximum Multiple Choice Questions (MCQs) in this chapter.

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• This quiz is version-1 of this chapter, the remaining questions of this chapter (Electrostatics) will be published soon.

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FSc Part-II | Physics | Chapter No.12: Electrostatics | Quiz Version-1

 

1. The Coulomb force is:
   1.   \(F=K\frac{q_{1}{q_{2}}}{r^2}\)
   2.   \(F=K\frac{q_{1}{q_{2}}}{r}\)
   3.   \(F=K\frac{q_{1}{q_{2}}}{r^3}\)
   4.   \(F=K\frac{q_{1}{r^{2}}}{q_2}\)
2. Value of K depends upon:
   1.   Charges
   2.   System of units and medium
   3.   Distance b/w charges
   4.   Nature of medium
3. Value of K in SI system of units:
   1.   \(9\times10^{9} Nm^{2}/c^{2}\)
   2.   \(9\times10^{10} Nm^{2}/c^{2}\)
   3.   \(9\times10^{-9} Nm^{2}/c^{2}\)
   4.   \(9\times10^{9} NC/m^{2}\)
4. Branch of physics which deals with charges at rest:
   1.   Current electricity
   2.   Electromagnetism
   3.   Electrostatic
   4.   Nuclear physics
5. Value of permittivity of free space:
   1.   \(8.85\times10^{-12}C^{2}/Nm^{2}\)
   2.   \(8.85\times10^{-12}C^{2}m^{2}/N\)
   3.   \(8.85\times10^{-12}Nm^{2}/C\)
   4.   \(8.85\times10^{-11}Nm^{2}/C^{2}\)
6. When medium is insulator, the electrostatic force b/w charges is:
   1.   Decreased
   2.   Zero
   3.   Increased
   4.   None of these
7. What is standard to measure relative permittivity:
   1.   Water
   2.   Vacuum
   3.   Air
   4.   Atmosphere
8. Which of the following statement is correct:
   1.   Similar charges attract each other
   2.   Similar charges attract and repel each other
   3.   Similar charges repel each other
   4.   Similar charges neither attract nor repel
9. Metals are good conductors of electricity because they have:
   1.   Large no. of bounded electrons
   2.   Small no. of electrons
   3.   Large no. of free electrons
   4.   Small no. of free electrons
10. Free electrons are:
    1.   Fixed
    2.   Loosely bounded
    3.   Strongly fixed
    4.   Tightly bound
11. SI unit of charge is:
    1.   Coulomb
    2.   Calorie
    3.   Ampere
    4.   Joule
12. No. of electrons in one coulomb charge is equal to_____ electrons:
    1.   \(6.2\times10^{18}\)
    2.   Zero
    3.   \(1.6\times10^{-22}\)
    4.   \(6.2\times10^{21}\)
13. Electrostatic force of repulsion b/w two electrons at 1 meter is:
    1.   \(9\times10^{9} N\)
    2.   \(1.44\times10^{-9} N\)
    3.   \(2.30\times10^{-28} N\)
    4.   \(1 N\)
14. Charge of 10 µC and 14.4 µC are 12cm apart, force b/w them is:
    1.   \(9\times10^{5}N\)
    2.   \(9\times10^{7}N\)
    3.   \(90 N\)
    4.   \(108\times10^{7}N\)
15. A substance contains:
    1.   Only +ve charge
    2.   Only -ve charge
    3.   Both +ve & -ve charge
    4.   None of them
16. If distance b/w two charge bodies is halved, force b/w them becomes:
    1.   Half
    2.   Four time
    3.   One fourth
    4.   Doubled
17. SI units of permittivity are:
    1.   \(N.m/C^{2}\)
    2.   \(C^{2}/N.m^2\)
    3.   \(N.m^2/C^{2}\)
    4.   \(N.m/C\)
18. Minimum charge on any electron be less than:
    1.   \(1.6\times10^{-19}C\)
    2.   \(3.2\times10^{-19}C\)
    3.   \(1.8\times10^{-19}C\)
    4.   \(9.1\times10^{-19}C\)
19. Force in medium of relative permittivity \(\epsilon_{r}\) is given by:
    1.   \(\acute{F}=\frac{F}{\epsilon_r}\)
    2.   \(\acute{F}=\frac{\epsilon_r}{F}\)
    3.   \(\acute{F}={\epsilon_r}.{F}\)
    4.   \(\acute{F}=\frac{F}{\epsilon_o\epsilon_r}\)
20. When current of one ampere is flowing across any cross-section of wire in one second, then quantity of charge is said to be:
    1.   1 coulomb
    2.   3 coulomb
    3.   1 micro-coulomb
    4.   None of them