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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
Taking the earth to be a spherical conductor of diameter 12.8 x 103km. Its capacity will be
Question # 2
If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be
Question # 3
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 # 4
Three resistors of resistance R each are combined in various ways. Which of the following cannot be obtained?
Question # 5
The thermistors are usually made of
Question # 6
Two point charges A and B separated by a distance R attract each other with a force of 12 x 10-3N. The force between A and B when the charges on them are doubled and distance is halved
Question # 7
The unit of intensity of electric field is
Question # 8
Potentiometer is more sensitive than voltmeter, because
Question # 9
The capacity of a parallel plat capacitor depends on the
Question # 10
The energy required to charge a capacitor of 5μF by connecting D.C. source of 20 KV is
Question # 11
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
Question # 12
A 100 W, 200 V bulb is connected to a 160 volts supply. The actual power consumption would be
Question # 13
Equal charges are given to two spheres of different radii. The potential will
Question # 14
The SI unit of electric field intensity is
Question # 15
Electron volt is the unit of.
Question # 16
A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is
Question # 17
One joule is equal to
Question # 18
The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10-15 is
Question # 19
At any point on the right bisector of the line joining two equal and opposite charges
Question # 20
The potential difference across the conductors should be maintained constant by connecting the ends of wire to the terminal of a device called a source of
Question # 21
Which of the following does not obey ohm's law?
Question # 22
Physicist George Simon ohm was a
Question # 23
What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts?
Question # 24
When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to
Question # 25
The capacitance of a parallel plate capacitor depends upon
Question # 26
The electric intensity at infinite distance from the point charge will be
Question # 27
The SI unit of current is
Question # 28
The unit of resistance is
Question # 29
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 # 30
A charge Q is divided into two parts q and Q - q and separated by a distance R. The force of repulsion between them will be maximum when
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 -
T Talha Khalil 18 - Jun - 2026 10 Min 55 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 -
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H hussain naqvi 19 - Sep - 2024 18 Min 43 Sec 65/120 -
H Humera Noor 27 - Dec - 2024 19 Min 28 Sec 65/120
ECAT Physics Chapter 12 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | 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
|
| 2 | Resistor is a device which convert electric energy to |
A. Heat energy
B. Chemical energy
C. Elastic energy
D. All of the above
|
| 3 | If one volt is needed to cause a current of one ampere to flow in a conductor, its resistance is |
A. one ohm
B. one joule
C. one volt
D. one ampere
|
| 4 | Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is |
A. 11.0 ohm
B. 1.0 ohm
C. 7.0 ohm
D. 3.0 ohm
|
| 5 | If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us |
A. parabola
B. straight line
C. hyper bola
D. ellipse
|
| 6 | The electrode connected with the positive terminal of the current source is called |
A. cathode
B. anode
C. electrolyte
D. position
|
| 7 | Some charge is being given to a conductor. Then its potential |
A. Is maximum at surface
B. Is maximum at centre
C. Is remain same throughout the conductor
D. Is maximum somewhere between surface and centre
|
| 8 | The relation V = IR represents |
A. Ampere law
B. Faraday's law
C. Ohm's law
D. Len's law
|
| 9 | The unit of conductance is |
A. ohm
B. meter
C. mho
D. ohm-meter
|
| 10 | The charge carriers in electrolyte are positive and negative |
A. protons
B. electrons
C. ions
D. none of these
|
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