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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
Surface density of charge is defined as
Question # 2
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 # 3
One joule is equal to
Question # 4
Coulomb's force between two point charges depends upon
Question # 5
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 # 6
The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is
Question # 7
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 # 8
Resistor is a device which convert electric energy to
Question # 9
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?
Question # 10
If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us
Question # 11
A metal plate of thickness half the separation between the capacitor plates of capacitance C is inserted. The new capacitance is
Question # 12
Heating effect caused by an electric circuit is written
Question # 13
If one volt is needed to cause a current of one ampere to flow in a conductor, its resistance is
Question # 14
What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts?
Question # 15
The unit of conductance is
Question # 16
The nature of capacity of electrostatic capacitor depends on
Question # 17
The electric intensity outside the two oppositely charged parallel metal plates is
Question # 18
The electric field intensity at a point due to a point charge
Question # 19
Equal charges are given to two spheres of different radii. The potential will
Question # 20
One electron volt is equal to
Question # 21
The capacitance of a parallel plate capacitor depends upon
Question # 22
Two electric bulbs of 200 W and 100 W have same voltage. If R1and R2be their resistance respectively then
Question # 23
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 # 24
The potential difference across each resistance in series combination is
Question # 25
Which one of the following is the unit of electric field intensity
Question # 26
The current through a metallic conductor is due to the motion of
Question # 27
The electric field due to an infinite long thin wire at a distance R varies as
Question # 28
The SI unit of conductivity is
Question # 29
The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is
Question # 30
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
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 -
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 -
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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
ECAT Physics Chapter 12 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | The speed of randomly moving electrons depends upon |
A. pressure
B. volume
C. temperature
D. mass
|
| 2 | 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
|
| 3 | Consider a spherical shell of metal at he centre of which a positive point charge is kept |
A. The electric filed is zero outside the shell
B. The electric field is zero everywhere
C. The electric field is zero in the region inside the shell
D. The electric field is non-zero in both regions outside and inside the shell
|
| 4 | The resistance of a conductor does not depend on its |
A. mass
B. resistivity
C. length
D. cross-sectional area
|
| 5 | 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 |
A. 3.9
B. 4
C. 4.2
D. 6
|
| 6 | 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 |
A. power
B. current
C. resistance
D. temperature
|
| 7 | The minimum charge on any object can not be less than |
A. 1.6 x 10-19C
B. 3.2 x 10-19C
C. 1.0 C
D. 4.8 x 10-19C
|
| 8 | The SI unit of electric field intensity is |
A. CN-1
B. NC-1or Vm-1
C. JC-1
D. AV-1
|
| 9 | 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 |
A. 7.20 N
B. 11.25 N
C. 22.50 N
D. 45.00
|
| 10 | In a voltmeter the conduction takes place due to |
A. Electrons only
B. Holes only
C. Electrons and holes
D. Electrons and ions
|
Test Questions