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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
The energy stored in a charge capacitor
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
In case of a parallel plate capacitor if the plate separation is doubled and plate area is halved, the capacitance becomes
Question # 4
The speed of randomly moving electrons depends upon
Question # 5
Two electric bulbs of 200 W and 100 W have same voltage. If R1and R2be their resistance respectively then
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
Two conductors having the same type of charges are connected by a conducting wire. There would not be any amount of charges on them if
Question # 8
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 # 9
A one microfarad capacitor of a TV is subjected to 4000 V potential difference. The energy stored in capacitor is
Question # 10
Free electrons are
Question # 11
If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be
Question # 12
At any point on the right bisector of the line joining two equal and opposite charges
Question # 13
The resistance of an incandescent lamp is
Question # 14
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 # 15
The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is
Question # 16
Calculate the amount of charge flowing in 2 minutes in a wire of resistance 10Ωwhen a potential difference of 20 V is applied between its ends
Question # 17
The concept of field theory was put forward by
Question # 18
Which one of the following is the unit of electric field intensity
Question # 19
The electric flux from a closed surface
Question # 20
Specific resistance of a wire depends upon
Question # 21
Three resistors of resistance R each are combined in various ways. Which of the following cannot be obtained?
Question # 22
A wire of radius r has resistance R. If it is stretched to a wire of r/2 radius, then the resistance becomes
Question # 23
If one volt is needed to cause a current of one ampere to flow in a conductor, its resistance is
Question # 24
The electric lines of force are
Question # 25
The resistivity of a substance depends upon the
Question # 26
The value of electrical constant of proportionality k is
Question # 27
Current provided by a battery is maximum when
Question # 28
The conductivity of a superconductor is
Question # 29
Some charge is being given to a conductor. Then its potential
Question # 30
The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10-15 is
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 -
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ECAT Physics Chapter 12 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | If we increase the distance between two plates of the capacitor, the capacitance will |
A. Increase
B. Decrease
C. Remain same
D. First increase then decrease
|
| 2 | Which one of the following causes production of heat when current is set up in a wire? |
A. Fall of electrons from higher orbits to lower orbits
B. Inter-atomic collisions
C. Inter-electron collisions
D. Collisions of conduction electron with atoms
|
| 3 | Surface density of charge is defined as |
A. Charge per unit volume
B. Charge per unit length
C. Charge per unit area
D. Charge per unit mass
|
| 4 | 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
|
| 5 | A 50 volt battery is connected across 10 ohm resistor. The current is 4.5 A. The internal resistance of the battery is |
A. Zero
B. 0.5Ω
C. 1.1Ω
D. 5.0Ω
|
| 6 | The SI unit of permitivity is |
A. Nm2C2
B. N-1m-2C2
C. NmC2
D. Nm2C-1
|
| 7 | If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be |
A. 5μF
B. 20μF
C. 10μF
D. 15μF
|
| 8 | In a charged capacitor the energy is stored in |
A. Both in positive and negative charges
B. Positive charges
C. The edges of the capacitor plates
D. The electric field between the plates
|
| 9 | The fractional change in resistance per kelvin is known as |
A. temperature coefficient
B. resistance coefficient
C. super temperature
D. critical temperature
|
| 10 | An alpha particle is accelerated through a potential difference of 106volt. Its kinetic energy will be |
A. 1 MeV
B. 2 MeV
C. 4 MeV
D. 8 MeV
|
Test Questions