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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
Capacitance of two or more capacitors
Question # 2
The ratio of the gravitational force Fgto the electrostatic force Febetween two electrons at the same distance apart is approximately
Question # 3
A metal plate of thickness half the separation between the capacitor plates of capacitance C is inserted. The new capacitance is
Question # 4
A 100 W, 200 V bulb is connected to a 160 volts supply. The actual power consumption would be
Question # 5
In a charged capacitor the energy is stored in
Question # 6
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 # 7
The statement "the electric force of repulsion or attraction between two point charges is directly proportional to the product of the charges and inversely proportional to square of the distance between them" refer to
Question # 8
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
Question # 9
Taking the earth to be a spherical conductor of diameter 12.8 x 103km. Its capacity will be
Question # 10
A capacitor of capacity 1μF is charged to 1 KV. The energy stored in J
Question # 11
Electric potential of earth is taken to be zero because the earth is good
Question # 12
One coulomb of charge is created by
Question # 13
A cube of metal is given a positive charge Q. For the above system, which of the following statements is true?
Question # 14
The resistance of a conductor does not depend on its
Question # 15
The capacity of a parallel plat capacitor depends on the
Question # 16
One joule is equal to
Question # 17
If we increase the distance between two plates of the capacitor, the capacitance will
Question # 18
The unit of conductance is
Question # 19
If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us
Question # 20
A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?
Question # 21
The charge carriers in electrolyte are positive and negative
Question # 22
The value of electrical constant of proportionality k is
Question # 23
Which one of the following is the unit of electric field intensity
Question # 24
Which one of the following causes production of heat when current is set up in a wire?
Question # 25
What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts?
Question # 26
The electric flux from a closed surface
Question # 27
The electrode connected with the positive terminal of the current source is called
Question # 28
The minimum charge on any object can not be less than
Question # 29
A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts
Question # 30
The current through a metallic conductor is due to the motion of
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ECAT Physics Chapter 12 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | In a voltmeter the conduction takes place due to |
A. Electrons only
B. Holes only
C. Electrons and holes
D. Electrons and ions
|
| 2 | The SI unit of electric flux is |
A. Weber
B. Nm2C-1
C. NmC-1
D. Nm-2C
|
| 3 | The graphical representation of ohm's law is |
A. hyperbola
B. straight line
C. ellipse
D. parabola
|
| 4 | 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
|
| 5 | Electron volt is the unit of. |
A. Potential difference
B. Energy
C. Resistance
D. Capacitance
|
| 6 | The ohm's is defined as |
A. 1 ampere / 1 volts
B. 1 coulomb / 1 volt
C. 1 volt / 1 ampere
D. 1 volt / 1 coulomb
|
| 7 | 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 |
A. -10 N
B. +10 N
C. +20 N
D. -20 N
|
| 8 | The concept of field theory was put forward by |
A. Franklin
B. Kepler
C. Oersted
D. Michael Faraday
|
| 9 | Capacitance of two or more capacitors |
A. Increases in series combination
B. Increases in parallel combination
C. Remains unchanged
D. None of the above
|
| 10 | The SI unit of conductivity is |
A. ohm-m
B. ohm-1m-1
C. ohm-m-1
D. ohm-1m
|
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