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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
At ordinary temperature, an increase in temperature increases the conductivity of
Question # 2
Electric potential of earth is taken to be zero because the earth is good
Question # 3
A conducting wire is drawn to double its length. Final resistivity of the material will be
Question # 4
The energy stored in a charge capacitor
Question # 5
Physicist George Simon ohm was a
Question # 6
The value of electrical constant of proportionality k is
Question # 7
The electric lines of force are
Question # 8
Solar cell converts sunlight directly into
Question # 9
The unit of resistivity is
Question # 10
If the length of the conductor is double and its cross sectional area is halved, its conductance will
Question # 11
One joule is equal to
Question # 12
A current of 1.6 A is passed through a solution of CuSO4. How many Cu2+ions are liberated in one minute?
Question # 13
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 # 14
If a 40 watt light bulb burns for 2 hours. how much heat is generated
Question # 15
An electric charge at rest is
Question # 16
Capacitance of two or more capacitors
Question # 17
If one volt is needed to cause a current of one ampere to flow in a conductor, its resistance is
Question # 18
A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts
Question # 19
An electric dipole is at the centre of a hollow sphere of radius r. The total normal electric flux through the sphere is (here Q is the charge and d is the distance between the two charges of the dipole)
Question # 20
One electron volt is equal to
Question # 21
When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to
Question # 22
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 # 23
A heater coil rated at (1000 W - 200 V) is connected to 110 volt line. What will be the power consumed?
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
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 # 26
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
Question # 27
A medium of dielectric constant 'K' is introduced between the plates of parallel plate condenser. As a result its capcitance
Question # 28
One coulomb per second is equal to
Question # 29
Ohm established a relation between
Question # 30
Some charge is being given to a conductor. Then its potential
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 -
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ECAT Physics Chapter 12 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | 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
|
| 2 | Which of the following does not obey ohm's law? |
A. Copper
B. Al
C. Diode
D. None
|
| 3 | If 2.2 kilowatt power is transmitted through 1 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
|
| 4 | The electric intensity at infinite distance from the point charge will be |
A. Infinite
B. Positive
C. Zero
D. Negative
|
| 5 | 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
|
| 6 | Electric potential of earth is taken to be zero because the earth is good |
A. Semiconductor
B. Conductor
C. Insulator
D. Dielectric
|
| 7 | If the two charges in Coulomb's law have double distance between them, then electric force |
A. Becomes two-fold
B. Becomes four-fold
C. Remains the same
D. None of these
|
| 8 | A condenser of capacity 50μF is charged to 10 V.The energy stored is |
A. 1.25 x 10-3J
B. 3.75 x 10-3J
C. 2.5 x 10-3J
D. 5 x 10-3J
|
| 9 | If an electron of charge 'e' is accelerated through a potential difference V., it will acquire energy |
A. Ve
B. V/e
C. e/V
D. 2Ve
|
| 10 | An electric dipole is at the centre of a hollow sphere of radius r. The total normal electric flux through the sphere is (here Q is the charge and d is the distance between the two charges of the dipole) |
A. Q/4πr2
B. 2Q/4πr2
C. Q.d
D. Zero
|
Test Questions
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fun day
02 Mar 2023Some answers are wrong
Hira arif
18 Jun 2019This website is grwst👍
Alisha
27 Apr 2019This website is great
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15 Feb 2019hi