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. A substance contains:
   1.   Only +ve charge
   2.   Only -ve charge
   3.   Both +ve & -ve charge
   4.   None of them
2. Which of the following statement is correct:
   1.   Similar charges repel each other
   2.   Similar charges neither attract nor repel
   3.   Similar charges attract each other
   4.   Similar charges attract and repel each other
3. Metals are good conductors of electricity because they have:
   1.   Large no. of free electrons
   2.   Small no. of free electrons
   3.   Large no. of bounded electrons
   4.   Small no. of electrons
4. Minimum charge on any electron be less than:
   1.   $9.1\times {10}^{-19}C$
   2.   $1.6\times {10}^{-19}C$
   3.   $3.2\times {10}^{-19}C$
   4.   $1.8\times {10}^{-19}C$
5. Value of permittivity of free space:
   1.   $8.85\times {10}^{-11}N{m}^2/C^2$
   2.   $8.85\times {10}^{-12}{C}^2/N{m}^2$
   3.   $8.85\times {10}^{-12}{C}^2{m}^2/N$
   4.   $8.85\times {10}^{-12}N{m}^2/C$
6. Charge of 10 µC and 14.4 µC are 12cm apart, force b/w them is:
   1.   $9\times {10}^{7}N$
   2.   $108\times {10}^{7}N$
   3.   $90N$
   4.   $9\times {10}^{5}N$
7. Branch of physics which deals with charges at rest:
   1.   Electromagnetism
   2.   Current electricity
   3.   Nuclear physics
   4.   Electrostatic
8. SI unit of charge is:
   1.   Coulomb
   2.   Joule
   3.   Calorie
   4.   Ampere
9. Value of K depends upon:
   1.   System of units and medium
   2.   Charges
   3.   Distance b/w charges
   4.   Nature of medium
10. SI units of permittivity are:
    1.   $N.m/C$
    2.   $C^2/N.m^2$
    3.   $N.m^2/C^2$
    4.   $N.m/C^2$
11. Force in medium of relative permittivity ${ϵ}_r$ is given by:
    1.   $\acute{F}=\frac{F}{{ϵ}_r}$
    2.   $\acute{F}={ϵ}_r.F$
    3.   $\acute{F}=\frac{{ϵ}_r}{F}$
    4.   $\acute{F}=\frac{F}{{ϵ}_o{ϵ}_r}$
12. Free electrons are:
    1.   Strongly fixed
    2.   Loosely bounded
    3.   Fixed
    4.   Tightly bound
13. Electrostatic force of repulsion b/w two electrons at 1 meter is:
    1.   $1.44\times {10}^{-9}N$
    2.   $9\times {10}^{9}N$
    3.   $1N$
    4.   $2.30\times {10}^{-28}N$
14. What is standard to measure relative permittivity:
    1.   Air
    2.   Atmosphere
    3.   Vacuum
    4.   Water
15. Value of K in SI system of units:
    1.   $9\times {10}^{9}NC/m^2$
    2.   $9\times {10}^{10}N{m}^2/c^2$
    3.   $9\times {10}^{9}N{m}^2/c^2$
    4.   $9\times {10}^{-9}N{m}^2/c^2$
16. When medium is insulator, the electrostatic force b/w charges is:
    1.   None of these
    2.   Decreased
    3.   Increased
    4.   Zero
17. The Coulomb force is:
    1.   $F=K\frac{q_1{r}^2}{q_2}$
    2.   $F=K\frac{q_1{q}_2}{r}$
    3.   $F=K\frac{q_1{q}_2}{r^3}$
    4.   $F=K\frac{q_1{q}_2}{r^2}$
18. If distance b/w two charge bodies is halved, force b/w them becomes:
    1.   Doubled
    2.   Half
    3.   Four time
    4.   One fourth
19. 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.   1 micro-coulomb
    3.   None of them
    4.   3 coulomb
20. No. of electrons in one coulomb charge is equal to_____ electrons:
    1.   $1.6\times {10}^{-22}$
    2.   $6.2\times {10}^{18}$
    3.   Zero
    4.   $6.2\times {10}^{21}$