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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
If the length of the conductor is double and its cross sectional area is halved, its conductance will
Question # 2
The SI unit of electric flux is
Question # 3
The electric field will be uniform
Question # 4
Surface density of charge is defined as
Question # 5
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 # 6
Current provided by a battery is maximum when
Question # 7
Coulomb's force between two point charges depends upon
Question # 8
In bringing an electron towards another electron, electrostatic potential energy of system
Question # 9
Force acting upon a charged particle kept between the plates of a charged condenser if F. IF one of the plates of the condenser is removed, force acting on the same will become
Question # 10
The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is
Question # 11
In a voltmeter the conduction takes place due to
Question # 12
Some charge is being given to a conductor. Then its potential
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
A medium of dielectric constant 'K' is introduced between the plates of parallel plate condenser. As a result its capcitance
Question # 15
Free electrons are
Question # 16
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 # 17
The energy stored in a charge capacitor
Question # 18
When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates
Question # 19
The capacity of a parallel plat capacitor depends on the
Question # 20
Heating effect caused by an electric circuit is written
Question # 21
If the distance of separation between two chares is increased, the electrical potential energy of the system will
Question # 22
The material in the form of wire or rod or plate which leads the current into or cut of the electrolyte is known as
Question # 23
Resistance of a conductor depends upon
Question # 24
If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be
Question # 25
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 # 26
The SI unit of capacitance is
Question # 27
A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor
Question # 28
What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts?
Question # 29
The unit of resistivity is
Question # 30
An alpha particle is accelerated through a potential difference of 106volt. Its kinetic energy will be
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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A Abdulrehman Haroon 26 - Sep - 2024 28 Min 20 Sec 60/120 -
1 123 Abcd 07 - Nov - 2024 12 Min 46 Sec 55/120
ECAT Physics Chapter 12 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | The resistance of an incandescent lamp is |
A. Smaller when switched on
B. Greater when switched off
C. The same whether it is switch off or switch on
D. Greater when switched on
|
| 2 | Ohm's law states that |
A. The current through a resistor is directly proportional to the applied voltage
B. The voltage across a resistor is directly proportional to the current passing through it
C. Resistance is the constant of proportionality between the voltage and current
D. all of these
|
| 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 | 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 |
A. 1 : 2
B. 2 : 1
C. 1 : 4
D. 4 : 1
|
| 5 | The substances whose resistance decreases with the increase in temperature these substances have coefficient of |
A. positive temperature
B. negative temperature
C. absolute temperature
D. zero temperature
|
| 6 | Free electrons are |
A. tightly bound
B. fixed
C. loosely bound
D. tightly fixed
|
| 7 | Electron volt is the unit of |
A. Potential difference
B. Energy
C. Resistance
D. Capacitance
|
| 8 |
|
A. 5μF
B. 10μF
C. 3μF
D. 6μF
|
| 9 | The SI unit of current is |
A. watt
B. coulomb
C. volt
D. ampere
|
| 10 | The potential difference across each resistance in series combination is |
A. same
B. different
C. zero
D. none of these
|
Test Questions