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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 carriers in electrolyte are positive and negative
Question # 2
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 # 3
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
Question # 4
The relation between the charge Q of a parallel plate capacitor and the P.D between its plates is
Question # 5
An alpha particle is accelerated through a potential difference of 106volt. Its kinetic energy will be
Question # 6
A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor
Question # 7
Three resistors of resistance R each are combined in various ways. Which of the following cannot be obtained?
Question # 8
The electric intensity outside the two oppositely charged parallel metal plates is
Question # 9
The electric field will be uniform
Question # 10
One joule is equal to
Question # 11
The electric flux from a closed surface
Question # 12
Electron volt is the unit of
Question # 13
Which one of the following causes production of heat when current is set up in a wire?
Question # 14
Ohm established a relation between
Question # 15
The potential difference across each resistance in series combination is
Question # 16
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 # 17
The resistance of an incandescent lamp is
Question # 18
The value of electrical constant of proportionality k is
Question # 19
An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be
Question # 20
A (100 W , 200 W) bulb is connected to a 160 V power supply. The power consumption would be
Question # 21
A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, then
Question # 22
Resistor is a device which convert electric energy to
Question # 23
A wire of radius r has resistance R. If it is stretched to a wire of r/2 radius, then the resistance becomes
Question # 24
Resistance of a conductor is increased, the currant will
Question # 25
If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us
Question # 26
One coulomb per second is equal to
Question # 27
The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is
Question # 28
The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10-15 is
Question # 29
Potentiometer is more sensitive than voltmeter, because
Question # 30
The graphical representation of ohm's law is
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 | Heating effect caused by an electric circuit is written |
A. H = I2Rt
B. H = I2R
C. H = IR2t
D. H = IR2
|
| 2 | A charge Q is divided into two parts q and Q - q and separated by a distance R. The force of repulsion between them will be maximum when |
A. q = Q/4
B. q = Q/2
C. q = !
D. None of these
|
| 3 | Coulomb force, when any material medium is placed between two charges |
A. Increases
B. Decreases
C. Remain unchanged
D. None of these
|
| 4 | 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
|
| 5 | 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
|
| 6 | The resistivity of a substance depends upon the |
A. length
B. mass
C. area
D. temperature
|
| 7 | 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? |
A. Zero
B. 5μC m-2
C. 20μC m-2
D. 8μC m-2
|
| 8 | The SI unit of permitivity is |
A. Nm2C2
B. N-1m-2C2
C. NmC2
D. Nm2C-1
|
| 9 | Ohm is the unit of |
A. current
B. capacitance
C. energy
D. resistance
|
| 10 | 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
|
Test Questions
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fun day
02 Mar 2023Some answers are wrong
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18 Jun 2019This website is grwst👍
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27 Apr 2019This website is great
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