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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
The conductivity of a superconductor is
Question # 2
Two point charge +3μC and +8μC repel each other with a force of 40 N. If a charge of -5μC is added to each of them, then the force between then will become
Question # 3
The powers of tow electric bulbs are 100 W and 200 W. Both of them are joined with 220 V mains. The ratio of resistances of their filaments will be
Question # 4
Resistance of a conductor depends upon
Question # 5
If one volt is needed to cause a current of one ampere to flow in a conductor, its resistance is
Question # 6
Some charge is being given to a conductor. Then its potential
Question # 7
The graphical representation of ohm's law is
Question # 8
The electric intensity outside the two oppositely charged parallel metal plates is
Question # 9
The resistance of an incandescent lamp is
Question # 10
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 # 11
Cause of heat production in a current carrying conductor is
Question # 12
Electric generators which convert mechanical energy into
Question # 13
A 100 W, 200 V bulb is connected to a 160 volts supply. The actual power consumption would be
Question # 14
The electric field intensity at a point due to a point charge
Question # 15
In a charged capacitor the energy is stored in
Question # 16
Which of the following does not obey ohm's law?
Question # 17
Taking the earth to be a spherical conductor of diameter 12.8 x 103km. Its capacity will be
Question # 18
The capacity of a parallel plat capacitor depends on the
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
Three resistors of resistance R each are combined in various ways. Which of the following cannot be obtained?
Question # 21
The SI unit of conductivity is
Question # 22
Free electrons are
Question # 23
What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts?
Question # 24
One electron volt is equal to
Question # 25
A medium of dielectric constant 'K' is introduced between the plates of parallel plate condenser. As a result its capcitance
Question # 26
Two electric bulbs of 200 W and 100 W have same voltage. If R1and R2be their resistance respectively then
Question # 27
The electrode connected with the positive terminal of the current source is called
Question # 28
Electron volt is the unit of.
Question # 29
A cube of metal is given a positive charge Q. For the above system, which of the following statements is true?
Question # 30
In bringing an electron towards another electron, electrostatic potential energy of system
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 -
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F Fatima Anis 26 - Dec - 2024 13 Min 35 Sec 80/120 -
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ECAT Physics Chapter 12 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | If an electron of charge 'e' is accelerated through a potential difference V., it will acquire energy |
A. Ve
B. V/e
C. e/V
D. 2Ve
|
| 2 | 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
|
| 3 | In a building, there are 15 bulbs of 40 watts, 5 bulbs of 100 watts, 5 fans of 80 watts and a heater of 1 kilowatt. The voltage of the electric main is 220 volts. The minimum efficiency of the main fuse of the building will be |
A. 0.4 A
B. 11.4 A
C. 9.8 A
D. 10.6 A
|
| 4 | A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver? |
A. 108 g
B. 10.8 g
C. 0.8 g
D. 108/0.8 g
|
| 5 | 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 |
A. 180 watt
B. 10 watt
C. 20 watt
D. 60 watt
|
| 6 | Resistance of a conductor depends upon |
A. the quantity of current passing through it
B. the voltage applied between its end
C. its dimensions, physical state and nature of its material
D. all of the above
|
| 7 | 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
|
| 8 | One joule is equal to |
A. 1.6 x 1019eV
B. 6.25 x 1018eV
C. 1.6 x 1818eV
D. 6.25 x 1019eV
|
| 9 | Three resistance 500,500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be |
A. 0.52 A
B. 1 mA
C. 0.7 mA
D. 1.4 A
|
| 10 | Capacitance of two or more capacitors |
A. Increases in series combination
B. Increases in parallel combination
C. Remains unchanged
D. None of the above
|
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