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

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