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MCQ's Test For Physics ECAT Pre Engineering Chapter 12 Electrostatics
Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 12 Electrostatics
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Total Questions30
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Time Allowed30
Physics ECAT Pre Engineering Chapter 12 Electrostatics
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Question # 1
In RC series circuit the time during which the capacitor acquires 0.63 times the equilibrium charge is called
Question # 2
A conducting wire is drawn to double its length. Final resistivity of the material will be
Question # 3
One coulomb per second is equal to
Question # 4
The liquid which conduct current is known as
Question # 5
The charge per unit time through any cross-section of a conductor is called
Question # 6
Specific resistance of a wire depends upon
Question # 7
A capacitor of capacity 1μF is charged to 1 KV. The energy stored in J
Question # 8
A cube of metal is given a positive charge Q. For the above system, which of the following statements is true?
Question # 9
When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates
Question # 10
The electrode connected with the positive terminal of the current source is called
Question # 11
When three identical bulbs of 60 watt, 200 volt rating are connected in series to a 200 volt supply, the power drawn by them will be
Question # 12
The capacitance of a parallel plate capacitor depends upon
Question # 13
Which one of the following causes production of heat when current is set up in a wire?
Question # 14
The electric field due to an infinite long thin wire at a distance R varies as
Question # 15
Electric potential of earth is taken to be zero because the earth is good
Question # 16
A proton is about 1840 times heavier than an electron. When it is accelerated by a potential difference of 1 KV, its kinetic energy will be
Question # 17
Coulomb's force between two point charges depends upon
Question # 18
The conventional current in a circuit is defined as " current which passes from a point at higher potential to a point at lower potential as if it represent a movement of
Question # 19
The excess (equal in number) of electrons that must be placed on each of two small spheres spaced 3 cm apart, with force of repulsion between the spheres to be 10-19N, is
Question # 20
A car battery has e.m.f 12 volt and internal resistance 5 x 10-2ohm. If it draws 60 ampere current, the terminal voltage of the battery will be
Question # 21
The current through a metallic conductor is due to the motion of
Question # 22
The resistance of a conductor does not depend on its
Question # 23
The energy required to charge a capacitor of 5μF by connecting D.C. source of 20 KV is
Question # 24
A 10 F capacitor is charged to a potential difference of 50 V and is connected to another uncharged capacitor in parallel. Now the common potential difference becomes 20 volt.The capacitance of second capacitor is
Question # 25
One electron volt is equal to
Question # 26
Capacitance of two or more capacitors
Question # 27
One coulomb of charge is created by
Question # 28
What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts?
Question # 29
A closed surface contains two equal and opposite charges. The net electric flux from the surface will be
Question # 30
A hollow insulated conduction sphere is given a positive charge of 10μC. What will be the electric field at the centre of the sphere if its radius is 2 meters?
Top Scorers Of Physics ECAT Pre Engineering Chapter 12 Electrostatics MCQ`s Test
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M Mehreen Ather 02 - Dec - 2024 30 Min 19 Sec 90/120 -
S Salvaa Sheikh 13 - Sep - 2024 24 Min 16 Sec 85/120 -
S Sualeh Murtaza 15 - Nov - 2024 05 Min 29 Sec 80/120 -
N Nitalaya Hassan 23 - Dec - 2024 06 Min 15 Sec 80/120 -
F Fatima Anis 26 - Dec - 2024 13 Min 35 Sec 80/120 -
A Abdullah Zubair 25 - Dec - 2024 14 Min 30 Sec 80/120 -
C Ch Ubaid Ullah 06 - Mar - 2026 17 Min 40 Sec 80/120 -
A Ahmad Sufyan 05 - May - 2026 18 Min 20 Sec 80/120 -
H Hanook Masih 25 - Sep - 2024 12 Min 15 Sec 75/120 -
F Furqan Asif 26 - Mar - 2026 36 Min 02 Sec 72/120 -
U usman gujjar 02 - Dec - 2024 07 Min 03 Sec 70/120 -
T Taha 18 - Mar - 2026 17 Min 17 Sec 68/120 -
H hussain naqvi 19 - Sep - 2024 18 Min 43 Sec 65/120 -
H Humera Noor 27 - Dec - 2024 19 Min 28 Sec 65/120 -
S suzi 10 - Feb - 2026 08 Min 22 Sec 64/120
ECAT Physics Chapter 12 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be |
A. 5μF
B. 20μF
C. 10μF
D. 15μF
|
| 2 | The electric flux from a closed surface |
A. Is independent of the shape of the surface
B. Depends on the charge enclosed by the surface
C. Both a and b
D. None of the above
|
| 3 | The ratio of the gravitational force Fgto the electrostatic force Febetween two electrons at the same distance apart is approximately |
A. 9.8
B. 24 x 1019
C. 24 x 1042
D. 24 x 10-44
|
| 4 | The earth's potential is taken as |
A. Negative
B. Positive
C. Zero
D. Infinite
|
| 5 | When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to |
A. One joule
B. One erg
C. One electron volt
D. None of these
|
| 6 | The SI unit of conductivity is |
A. ohm-m
B. ohm-1m-1
C. ohm-m-1
D. ohm-1m
|
| 7 | The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is |
A. 10Ω
B. 20Ω
C. 30Ω
D. 40Ω
|
| 8 | A piece of fuse wire melts when a current of 15 ampere flows through it. With this current. If it dissipates 22.5 W, the resistance of fuse wire will be |
A. Zero
B. 10Ω
C. 1Ω
D. 0.10Ω
|
| 9 | The SI unit of permitivity is |
A. Nm2C2
B. N-1m-2C2
C. NmC2
D. Nm2C-1
|
| 10 | The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is |
A. 4/5Ω
B. 5/4Ω
C. 20Ω
D. 0.05 Ω
|
Test Questions
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fun day
02 Mar 2023Some answers are wrong
Hira arif
18 Jun 2019This website is grwst👍
Alisha
27 Apr 2019This website is great
baber
15 Feb 2019hi