MCQ 11 Mark
The dielectric constant of a metal is :
- A-1
- B$0$
- C1
- ✓infinity
Answer
View full question & answer→Correct option: D.
infinity
D
Questions
M.C.Q (1 Marks)
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38 questions · auto-graded multiple-choice test.
MCQ 21 Mark
The capacity of a spherical conductor is 1.0 µF. Its radius will be :
- A1.11 metre
- B10 metre
- ✓9 km
- D1.11 cm
Answer
View full question & answer→Correct option: C.
9 km
C
MCQ 31 Mark
Capacity of any condenser does not depend upon :
- Ashape of plates
- Bsize of plates
- ✓charges on plates
- Ddistance between plates
Answer
View full question & answer→Correct option: C.
charges on plates
C
MCQ 41 Mark
Picofarad is the unit of :
- Aelectric charge
- Bintensity of electric field
- ✓electric capacity
- Delectric flux
Answer
View full question & answer→Correct option: C.
electric capacity
C
MCQ 51 Mark
The electrostatic energy of the system made by two electric dipoles kept at a distance 'r' is proportional to :
- A$r^{2}$
- ✓$r^{-3}$
- C$r^{4}$
- DNone of these
Answer
View full question & answer→Correct option: B.
$r^{-3}$
B
MCQ 61 Mark
The relation between electric field (E) and electric potential (V) is :
- ✓$E=-(\frac{dV}{dr})$
- B$E=-(\frac{dr}{dV})$
- C$E=(\frac{dV}{dr})$
- D$E=(\frac{dr}{dV})$
Answer
View full question & answer→Correct option: A.
$E=-(\frac{dV}{dr})$
A
MCQ 71 Mark
An electron is accelerated to 5 volt potential difference. The energy gained by the electron will be :
- A5 joule
- ✓5 eV
- C5 erg
- D5 watt
Answer
View full question & answer→Correct option: B.
5 eV
B
MCQ 81 Mark
In broad-side-on position, the electric potential due to electric dipole is :
- A$\frac{1}{4\pi\in_{0}}\frac{P}{r}$
- B$\frac{1}{4\pi\in_{0}}\frac{P}{r^{2}}$
- ✓zero
- Dinfinite
Answer
View full question & answer→Correct option: C.
zero
C
MCQ 91 Mark
$n$ electric dipoles are situated in a closed surface. Total electric flux coming out from closed surface will be :
- A$q/\in_{0}$
- B$2q/\in_{0}$
- C$nq/\in_{0}$
- ✓zero
Answer
View full question & answer→Correct option: D.
zero
D
MCQ 101 Mark
On moving from the surface of a charged metallic sphere to the centre of the sphere, the electric field :
- Adecreases
- Bincreases
- Cremains same as at the surface
- ✓zero at all places
Answer
View full question & answer→Correct option: D.
zero at all places
D
MCQ 111 Mark
Two equal and opposite charges of 5 coulomb are kept mutually at a distance of 5.0 cm. The electric dipole moment of the system is :
- A$5\times10^{-2}$ coulomb-metre
- ✓$25\times10^{-2}$ coulomb-metre
- C1 coulomb-metre
- Dzero
Answer
View full question & answer→Correct option: B.
$25\times10^{-2}$ coulomb-metre
B
MCQ 121 Mark
Number of electrons present in 8 coulomb negative charge is :
- ✓$5\times10^{19}$
- B$2.5\times10^{19}$
- C$12.8\times10^{19}$
- D$1.6\times10^{19}$
Answer
View full question & answer→Correct option: A.
$5\times10^{19}$
A
MCQ 131 Mark
The dimensional formula of intensity of electric field is :
- A$[MLT^{2}A^{-1}]$
- ✓$[MLT^{-3}A^{-1}]$
- C$[MLT^{-3}A]$
- D$[ML^{2}T^{-3}A^{-1}]$
Answer
View full question & answer→Correct option: B.
$[MLT^{-3}A^{-1}]$
B
MCQ 141 Mark
Unit of linear charge density is :
- ✓coulomb/ metre
- Bcoulomb × metre
- Cmetre / coulomb
- DNone of these
Answer
View full question & answer→Correct option: A.
coulomb/ metre
A
MCQ 151 Mark
Three capacitors of capacitance $6~\mu F$ are available. The minimum and maximum capacitance obtained are :
- A$3~\mu F,$ $12~\mu F$
- B$2~\mu F,$ $12~\mu F$
- ✓$2~\mu F,$ $18~\mu F$
- D$6~\mu F,$ $18~\mu F$
Answer
View full question & answer→Correct option: C.
$2~\mu F,$ $18~\mu F$
C
MCQ 161 Mark
64 identical drops each of capacity $5~\mu F$ combine to form a big drop. What will be the capacity of the big drop ?
- A$25~\mu F$
- B$4~\mu F$
- C$164~\mu F$
- ✓20 µF
Answer
View full question & answer→Correct option: D.
20 µF
D
MCQ 171 Mark
What is the angle between the electric dipole moment $\vec{p}$ and the electric field strength $\vec{E}$ when the dipole is in a stable equilibrium ?
- A$\frac{\pi}{4}$
- B$\pi$
- C$\frac{\pi}{2}$
- ✓$0$
Answer
View full question & answer→Correct option: D.
$0$
D
MCQ 181 Mark
Which of the following physical quantities is a vector ?
- AElectric flux
- BElectric potential
- CElectric potential energy
- ✓Electric intensity
Answer
View full question & answer→Correct option: D.
Electric intensity
D
MCQ 191 Mark
The ratio of electric force and gravitational force acting between two charges is in the order of :
- A$10^{42}$
- ✓$10^{39}$
- C$10^{36}$
- D1
Answer
View full question & answer→Correct option: B.
$10^{39}$
B
MCQ 201 Mark
The law, governing the force acting between two electric charges is known as :
- AAmpere law
- BOhm's law
- CFaraday's law
- ✓Coulomb's law
Answer
View full question & answer→Correct option: D.
Coulomb's law
D
MCQ 211 Mark
If n capacitors of equal capacity $C_{1}$ are connected in parallel the equivalent capacity will be :
- A$C=\frac{C_{1}}{n}$
- B$C=\frac{n}{C_{1}}$
- C$C=n^{2}C_{1}$
- ✓$C=nC_{1}$
Answer
View full question & answer→Correct option: D.
$C=nC_{1}$
D
MCQ 221 Mark
Energy of a charged conductor is :
- A$E=\frac{1}{2}CV$
- ✓$E=\frac{1}{2}CV^{2}$
- C$E=\frac{1}{2}C^{2}V$
- D$E=C.V$
Answer
View full question & answer→Correct option: B.
$E=\frac{1}{2}CV^{2}$
B
MCQ 231 Mark
The capacity of any conductor is :
- A$C=qV$
- B$C=\frac{V}{q}$
- C$C=\frac{1}{2}qV$
- ✓$C=\frac{q}{V}$
Answer
View full question & answer→Correct option: D.
$C=\frac{q}{V}$
D
MCQ 241 Mark
The vecter term of coulomb's law is :
- ✓$\vec{F}=\frac{1}{4\pi\in_{0}}\frac{q_{1}q_{2}}{|\vec{r}|^{3}}\vec{r}$
- B$\vec{F}=\frac{1}{4\pi\in_{0}}\frac{q_{1}q_{2}}{|\vec{r}|^{3}}$
- C$\overrightarrow{ F }=\frac{1}{4 \pi \varepsilon_0} \frac{q_1 q_2}{r^2}$
- D$\vec{F}=\frac{1}{4\pi\in_{0}}\frac{q_{1}q_{2}}{|\vec{r}|^{2}}\vec{r}$
Answer
View full question & answer→Correct option: A.
$\vec{F}=\frac{1}{4\pi\in_{0}}\frac{q_{1}q_{2}}{|\vec{r}|^{3}}\vec{r}$
A
MCQ 251 Mark
The S.I. unit of electric intensity is :
- ANC
- ✓$NC^{-1}$
- C$NC^{2}$
- D$N/C^{2}$
Answer
View full question & answer→Correct option: B.
$NC^{-1}$
B
MCQ 261 Mark
S.I. unit of electric depole moment is :
- Acm
- B$cm^{2}$
- ✓$cm^{-1}$
- D$cm^{-2}$
Answer
View full question & answer→Correct option: C.
$cm^{-1}$
C
MCQ 271 Mark
Two capacitors each of capacity C are connected in parallel. The equivalent capacity is :
- ✓2C
- BC
- C$\frac{c}{2}$
- D$\frac{1}{2C}$
Answer
View full question & answer→Correct option: A.
2C
A
MCQ 281 Mark
Electric potential is equal to :
- A$\frac{q}{W}$
- ✓$\frac{W}{q}$
- CWq
- D$\sqrt{Wq}$
Answer
View full question & answer→Correct option: B.
$\frac{W}{q}$
B
MCQ 291 Mark
The value of electric potential of a distance $r$ from a point charge $q$ is :
- ✓$\frac{1}{4\pi\in_{0}}\frac{q}{r}$
- B$\frac{1}{4\pi\in_{0}}\frac{q}{r^{2}}$
- C$\frac{qr}{4\pi\in_{0}}$
- D$\frac{1}{4\pi\in_{0}}\frac{q^{2}}{r}$
Answer
View full question & answer→Correct option: A.
$\frac{1}{4\pi\in_{0}}\frac{q}{r}$
A
MCQ 301 Mark
One farad (4F) is equal to :
- A1CV
- ✓$1CV^{-1}$
- C$1CV^{-2}$
- D1CV2
Answer
View full question & answer→Correct option: B.
$1CV^{-1}$
B
MCQ 311 Mark
Which of the following is correct for the capacity of a parallel place capacitor ?
- ✓$\frac{A\in_{0}}{d}$
- B$\frac{\in_{0}d}{A}$
- C$\frac{d}{\in_{0}A}$
- D$\frac{A}{\in_{0}d}$
Answer
View full question & answer→Correct option: A.
$\frac{A\in_{0}}{d}$
A
MCQ 321 Mark
Equivalent capacity between A and B in figure is:
- ✓C
- B$\frac{c}{2}$
- C2C
- D$\frac{2}{C}$
Answer
View full question & answer→Correct option: A.
C
A
MCQ 331 Mark
The value of $\frac{1}{4\pi\in_{0}}$
- ✓$9\times10^{9}Nm^{2}C^{-2}$
- B$9\times10^{-9}Nm^{2}C^{-2}$
- C$9\times10^{12}Nm^{2}C^{-2}$
- D$9\times10^{-12}Nm^{2}C^{-2}$
Answer
View full question & answer→Correct option: A.
$9\times10^{9}Nm^{2}C^{-2}$
A
MCQ 341 Mark
The dielectric constant of water is :
- ✓80
- B60
- C1
- D42.5
Answer
View full question & answer→Correct option: A.
80
A
MCQ 351 Mark
The relative permittivity $(\in_{r})$ of a medium is :
- ✓$\frac{\in}{\in_{0}}$
- B$\in\times\in_{0}$
- C$\in+\in_{0}$
- D$\in-\in_{0}$
Answer
View full question & answer→Correct option: A.
$\frac{\in}{\in_{0}}$
A
MCQ 361 Mark
Which of the following relations is correct ?
- ✓$\vec{E}=\frac{\vec{F}}{q}$
- B$\vec{E}=q\vec{F}$
- C$\vec{E}=\frac{q}{\vec{F}}$
- D$\vec{E}=\frac{1}{4\pi\in_{0}}\frac{q}{\vec{F}}$
Answer
View full question & answer→Correct option: A.
$\vec{E}=\frac{\vec{F}}{q}$
A
MCQ 371 Mark
The electric potential of free space is :
- A$9\times10^{9}mF^{-1}$
- B$1.6\times10^{-19}C$
- ✓$8.85\times10^{-12}Fm^{-1}$
- D$8.85\times10^{-9}Fm^{-1}$
Answer
View full question & answer→Correct option: C.
$8.85\times10^{-12}Fm^{-1}$
C
MCQ 381 Mark
The value of force along on a charged particle in electric tied is :
- ✓qE
- B$q/E$
- C$\frac{E}{q}$
- D$\sqrt{qE}$
Answer
View full question & answer→Correct option: A.
qE
A