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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 resistance of a conductor does not depend on its
Question # 2
A cube of metal is given a positive charge Q. For the above system, which of the following statements is true?
Question # 3
Which one of the following causes production of heat when current is set up in a wire?
Question # 4
In a voltmeter the conduction takes place due to
Question # 5
A heater coil rated at (1000 W - 200 V) is connected to 110 volt line. What will be the power consumed?
Question # 6
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 # 7
The resistance of an incandescent lamp is
Question # 8
A medium of dielectric constant 'K' is introduced between the plates of parallel plate condenser. As a result its capcitance
Question # 9
Resistor is a device which convert electric energy to
Question # 10
The resistance of the given conductor can be increased by
Question # 11
The resistivity of a substance depends upon the
Question # 12
Three resistance 500,500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be
Question # 13
The unit of resistivity is
Question # 14
If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us
Question # 15
The capacitance of a parallel plate capacitor depends upon
Question # 16
The energy stored in a charge capacitor
Question # 17
A (100 W , 200 W) bulb is connected to a 160 V power supply. The power consumption would be
Question # 18
Cause of heat production in a current carrying conductor is
Question # 19
Electron volt is the unit of
Question # 20
If 2.2 kilowatt power is transmitted through a 10 ohm line at 22000 volt, the power loss in the form of heat will be
Question # 21
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 # 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
The SI unit of permitivity is
Question # 24
If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be
Question # 25
The earth's potential is taken as
Question # 26
A point charge Q is placed at the mid-point of a line joining two charges. 4q and q. if the net force on charge q is zero. then Q must be equal to
Question # 27
Which one of the following has larger value of relative permitivity Erat room temperature?
Question # 28
Coulomb's force between two point charges depends upon
Question # 29
Three resistors of resistance R each are combined in various ways. Which of the following cannot be obtained?
Question # 30
The charge carriers in gases are
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ECAT Physics Chapter 12 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | The ratio of the gravitational force Fgto the electrostatic force Febetween two electrons at the same distance apart is approximately |
A. 9.8
B. 24 x 1019
C. 24 x 1042
D. 24 x 10-44
|
| 2 | 106electrons are moving through a wire per second, the current developed is |
A. 1.6 x 10-19
B. 1 A
C. 1.6 x 10-15 A
D. 106A
|
| 3 | Free electrons are |
A. tightly bound
B. fixed
C. loosely bound
D. tightly fixed
|
| 4 | The liquid which conduct current is known as |
A. heating effect
B. chemical energy
C. electrolyte
D. ohm's law
|
| 5 | The resistance of the given conductor can be increased by |
A. Increasing the area
B. Changing resistivity
C. Decreasing the length
D. None of the above because change does not matter because in any case the volume remains the same
|
| 6 | If a 40 watt light bulb burns for 2 hours. how much heat is generated |
A. 288 x 103J
B. 288 x 108J
C. 288 x 105J
D. 288 x 106J
|
| 7 | Thermocouple is an arrangement of two different metals |
A. To convert heat energy in to electrical energy
B. To produce more heat
C. To convert heat energy into chemical energy
D. To convert electric energy in to heat energy
|
| 8 | A metal plate of thickness half the separation between the capacitor plates of capacitance C is inserted. The new capacitance is |
A. C
B. C/2
C. Zero
D. 2C
|
| 9 | An electric charge at rest is |
A. Only an electric field
B. Only a magnetic field
C. Both electric and magnetic fields
D. None of the above
|
| 10 | Which of the following does not obey ohm's law? |
A. Copper
B. Al
C. Diode
D. None
|
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
baber
15 Feb 2019hi