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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 electric intensity outside the two oppositely charged parallel metal plates is
Question # 2
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 # 3
The charge carriers in electrolyte are positive and negative
Question # 4
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 # 5
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 # 6
The excess (equal in number) of electrons that must be placed on each of two small spheres spaced 3 cm apart, with force of repulsion between the spheres to be 10-19N, is
Question # 7
Thermocouple is an arrangement of two different metals
Question # 8
A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy
Question # 9
The capacity of a parallel plat capacitor depends on the
Question # 10
A 100 W, 200 V bulb is connected to a 160 volts supply. The actual power consumption would be
Question # 11
The SI unit of permitivity is
Question # 12
If an electron of charge 'e' is accelerated through a potential difference V., it will acquire energy
Question # 13
The electric field due to an infinite long thin wire at a distance R varies as
Question # 14
The speed of randomly moving electrons depends upon
Question # 15
Free electrons are
Question # 16
The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is
Question # 17
The energy stored in a charge capacitor
Question # 18
Electric potential of earth is taken to be zero because the earth is good
Question # 19
The electric intensity at infinite distance from the point charge will be
Question # 20
Ohm is the unit of
Question # 21
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 # 22
If the distance of separation between two chares is increased, the electrical potential energy of the system will
Question # 23
A 50 volt battery is connected across 10 ohm resistor. The current is 4.5 A. The internal resistance of the battery is
Question # 24
Battery is charged in motor cars, which is based on
Question # 25
The dot product of electric field intensity E and vector area A is called
Question # 26
The resistivity of a substance depends upon the
Question # 27
If one volt is needed to cause a current of one ampere to flow in a conductor, its resistance is
Question # 28
In RC series circuit the time during which the capacitor acquires 0.63 times the equilibrium charge is called
Question # 29
A heater coil rated at (1000 W - 200 V) is connected to 110 volt line. What will be the power consumed?
Question # 30
A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, then
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 -
A Abdullah Zubair 25 - Dec - 2024 14 Min 30 Sec 80/120 -
H Hanook Masih 25 - Sep - 2024 12 Min 15 Sec 75/120 -
U usman gujjar 02 - Dec - 2024 07 Min 03 Sec 70/120 -
H hussain naqvi 19 - Sep - 2024 18 Min 43 Sec 65/120 -
H Humera Noor 27 - Dec - 2024 19 Min 28 Sec 65/120 -
Z Zaka Ullah 09 - Nov - 2024 07 Min 20 Sec 60/120 -
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1 123 Abcd 07 - Nov - 2024 12 Min 46 Sec 55/120 -
A Abdul rafay Malghani 02 - Dec - 2024 14 Min 25 Sec 55/120 -
M Mehpara Khatoon 07 - Aug - 2024 24 Min 16 Sec 55/120
ECAT Class Physics Chapter 12 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | 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
|
| 2 | Cause of heat production in a current carrying conductor is |
A. Collisions of free electrons with one another
B. High drift speed of free electrons
C. Collisions of free electrons with atoms or ions of conductor
D. High resistance value
|
| 3 | Some charge is being given to a conductor. Then its potential |
A. Is maximum at surface
B. Is maximum at centre
C. Is remain same throughout the conductor
D. Is maximum somewhere between surface and centre
|
| 4 | If electric and gravitational force on an electron in a uniform electric field will be |
A. E=mg/q
B. E=q/mg
C. E=,g/q
D. E=qg/m
|
| 5 | A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts |
A. 1310 W
B. 670 W
C. 810 W
D. 1210 W
|
| 6 | Heating effect caused by an electric circuit is written |
A. H = I2Rt
B. H = I2R
C. H = IR2t
D. H = IR2
|
| 7 | The unit of conductance is |
A. ohm
B. meter
C. mho
D. ohm-meter
|
| 8 | If the length of the conductor is double and its cross sectional area is halved, its conductance will |
A. Increase four fold
B. Become one-fourth
C. Become one-half
D. Remains unchanged
|
| 9 | The charge per unit time through any cross-section of a conductor is called |
A. capacitance
B. electric power
C. current
D. potential difference
|
| 10 | The SI unit of capacitance is |
A. Farad
B. Henry
C. Ohm
D. Volt
|
Test Questions
