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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
A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?
Question # 2
The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is
Question # 3
A 100 W, 200 V bulb is connected to a 160 volts supply. The actual power consumption would be
Question # 4
A uniform resistance wire of Length L and diameter d has a resistance R. Another wire of same material has length, 4L and diameter 2d, the resistance will be
Question # 5
The substances whose resistance decreases with the increase in temperature these substances have coefficient of
Question # 6
The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is
Question # 7
At ordinary temperature, an increase in temperature increases the conductivity of
Question # 8
Which of the following does not obey ohm's law?
Question # 9
If a charged spherical conductor of radius 10 cm has potential V at a point distance 5 cm from its centre, then the potential at a point distance 15 cm from the centre will be
Question # 10
The SI unit of electric field intensity is
Question # 11
If two bulbs one of 60 W and other of 100 W are connected in parallel, then which one of the following will flow more?
Question # 12
A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts
Question # 13
The electric flux is linked with a surface will be maximum when
Question # 14
The ratio of the gravitational force Fgto the electrostatic force Febetween two electrons at the same distance apart is approximately
Question # 15
Free electrons are
Question # 16
Ohm's law states that
Question # 17
One coulomb of charge is created by
Question # 18
The unit of resistivity is
Question # 19
Current provided by a battery is maximum when
Question # 20
The nature of capacity of electrostatic capacitor depends on
Question # 21
Capacitance of two or more capacitors
Question # 22
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 # 23
In Pakistan electricity is supplied for domestic use at 220 V, it is supplied at 110 V in USA. If the resistance of a 60 W bulb for use in Pakistan is R, the resistance of a 60 W bulb for use in USA will be
Question # 24
Heating effect caused by an electric circuit is written
Question # 25
In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10-19C. The number of excess electrons on the drop is
Question # 26
A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is
Question # 27
The force between two chares 0.06 m apart is 5 N. If each charge is moved towards the other by 0.01 m, then the force between them will become
Question # 28
Resistance of a conductor is increased, the currant will
Question # 29
A (100 W , 200 W) bulb is connected to a 160 V power supply. The power consumption would be
Question # 30
The energy stored in a charge capacitor
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 -
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C Ch Ubaid Ullah 06 - Mar - 2026 17 Min 40 Sec 80/120 -
H Hanook Masih 25 - Sep - 2024 12 Min 15 Sec 75/120 -
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Z Zaka Ullah 09 - Nov - 2024 07 Min 20 Sec 60/120 -
A Abdulrehman Haroon 26 - Sep - 2024 28 Min 20 Sec 60/120
ECAT Physics Chapter 12 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | The current through a metallic conductor is due to the motion of |
A. protons
B. neutrons
C. electrons
D. free electrons
|
| 2 | 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
|
| 3 | 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
|
| 4 | Electron volt is the unit of |
A. Potential difference
B. Energy
C. Resistance
D. Capacitance
|
| 5 | A medium of dielectric constant 'K' is introduced between the plates of parallel plate condenser. As a result its capcitance |
A. Increase k time
B. Decreases k times
C. Decreases 1/K times
D. Remains unchanged
|
| 6 | An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be |
A. V/e
B. eV
C. e/V
D. V
|
| 7 | If 2.2 kilowatt power is transmitted through a 10 ohm line at 22000 volt, the power loss in the form of heat will be |
A. 0.1 watt
B. 1 watt
C. 10 watt
D. 100 watt
|
| 8 | A (100 W , 200 W) bulb is connected to a 160 V power supply. The power consumption would be |
A. 64 W
B. 80 W
C. 100 W
D. 125 W
|
| 9 | One electron volt is equal to |
A. 1.6 x 1019eV
B. 6.25 x 1018 eV
C. 1.6 x 1018 eV
D. 6.25 x 1019eV
|
| 10 | 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
|
Test Questions