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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 charge per unit time through any cross-section of a conductor is called
Question # 2
A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, then
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
If an electron of charge 'e' is accelerated through a potential difference V., it will acquire energy
Question # 5
Which of the following represents an electric current?
Question # 6
Taking the earth to be a spherical conductor of diameter 12.8 x 103km. Its capacity will be
Question # 7
The charge carriers in electrolyte are positive and negative
Question # 8
Some charge is being given to a conductor. Then its potential
Question # 9
Which one of the following is the unit of electric field intensity
Question # 10
Ohm established a relation between
Question # 11
A (100 W , 200 W) bulb is connected to a 160 V power supply. The power consumption would be
Question # 12
A wire of radius r has resistance R. If it is stretched to a wire of r/2 radius, then the resistance becomes
Question # 13
A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy
Question # 14
If a 40 watt light bulb burns for 2 hours. how much heat is generated
Question # 15
Resistor is a device which convert electric energy to
Question # 16
What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts?
Question # 17
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 # 18
Battery is charged in motor cars, which is based on
Question # 19
In bringing an electron towards another electron, electrostatic potential energy of system
Question # 20
Electron volt is the unit of.
Question # 21
Thermocouple is an arrangement of two different metals
Question # 22
If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be
Question # 23
Ohm is the unit of
Question # 24
When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates
Question # 25
A 50 volt battery is connected across 10 ohm resistor. The current is 4.5 A. The internal resistance of the battery is
Question # 26
The dot product of electric field intensity E and vector area A is called
Question # 27
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 # 28
If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us
Question # 29
Resistance of a conductor is increased, the currant will
Question # 30
The resistance of a conductor does not depend on its
Top Scorers Of Physics ECAT Pre Engineering Chapter 12 Electrostatics MCQ`s Test
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ECAT Physics Chapter 12 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Which one of the following is the unit of electric field intensity |
A. JC-1
B. Vm-1
C. Cm-1
D. CJ-1
|
| 2 | If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be |
A. 6 ohm
B. 4 ohm
C. zero ohm
D. 1.33 ohm
|
| 3 | 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 |
A. Zero
B. F/2
C. F
D. 2F
|
| 4 | One coulomb of charge is created by |
A. 10 electrons
B. 1.6 x 10-19electrons
C. 6.25 x 1018electrons
D. 6.25 x 1021electrons
|
| 5 | 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
|
| 6 | 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
|
| 7 | The SI unit of capacitance is |
A. Farad
B. Henry
C. Ohm
D. Volt
|
| 8 | 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
|
| 9 | The electric lines of force are |
A. Imaginary
B. Physically existing everywhere
C. Physically existing near the charge
D. All of the above
|
| 10 | For two resistance wires joined in parallel, the resultant resistance is 6/5 ohm. When one of the resistance wire breaks, the effective resistance becomes 2 ohm. The resistance of the broken wire is |
A. 3/5 ohm
B. 2 ohm
C. 6/5 ohm
D. 3 ohm
|
Test Questions