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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 flux from a closed surface
Question # 2
A metal plate of thickness half the separation between the capacitor plates of capacitance C is inserted. The new capacitance is
Question # 3
Resistance of a conductor is increased, the currant will
Question # 4
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 # 5
The capacitance of a parallel plate capacitor depends upon
Question # 6
In a voltmeter the conduction takes place due to
Question # 7
The fractional change in resistance per kelvin is known as
Question # 8
Current provided by a battery is maximum when
Question # 9
The unit of conductance is
Question # 10
Electric generators which convert mechanical energy into
Question # 11
Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is
Question # 12
A piece of fuse wire melts when a current of 15 ampere flows through it. With this current. If it dissipates 22.5 W, the resistance of fuse wire will be
Question # 13
Which of the following represents an electric current?
Question # 14
Resistor is a device which convert electric energy to
Question # 15
The electrode connected with the positive terminal of the current source is called
Question # 16
One coulomb of charge is created by
Question # 17
The capacity of a parallel plat capacitor depends on the
Question # 18
The unit of intensity of electric field is
Question # 19
The thermistors are usually made of
Question # 20
The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is
Question # 21
If two bulbs one of 60 W and other of 100 W are connected in parallel, then which one of the following will flow more?
Question # 22
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 # 23
Heating effect caused by an electric circuit is written
Question # 24
The SI unit of electric field intensity is
Question # 25
If the two charges in Coulomb's law have double distance between them, then electric force
Question # 26
Two conductors having the same type of charges are connected by a conducting wire. There would not be any amount of charges on them if
Question # 27
The minimum charge on any object can not be less than
Question # 28
Which one of the following has larger value of relative permitivity Erat room temperature?
Question # 29
In a building, there are 15 bulbs of 40 watts, 5 bulbs of 100 watts, 5 fans of 80 watts and a heater of 1 kilowatt. The voltage of the electric main is 220 volts. The minimum efficiency of the main fuse of the building will be
Question # 30
Coulomb's force between two point charges depends upon
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 -
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ECAT Physics Chapter 12 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | In a building, there are 15 bulbs of 40 watts, 5 bulbs of 100 watts, 5 fans of 80 watts and a heater of 1 kilowatt. The voltage of the electric main is 220 volts. The minimum efficiency of the main fuse of the building will be |
A. 0.4 A
B. 11.4 A
C. 9.8 A
D. 10.6 A
|
| 2 | The potential difference across each resistance in series combination is |
A. same
B. different
C. zero
D. none of these
|
| 3 | Electron volt is the unit of. |
A. Potential difference
B. Energy
C. Resistance
D. Capacitance
|
| 4 | 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 |
A. 7.20 N
B. 11.25 N
C. 22.50 N
D. 45.00
|
| 5 | 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
|
| 6 | What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts? |
A. 10-1A
B. 10-2A
C. 10-4A
D. 1 mA
|
| 7 | The substances whose resistance decreases with the increase in temperature these substances have coefficient of |
A. positive temperature
B. negative temperature
C. absolute temperature
D. zero temperature
|
| 8 | The earth's potential is taken as |
A. Negative
B. Positive
C. Zero
D. Infinite
|
| 9 | When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to |
A. One joule
B. One erg
C. One electron volt
D. None of these
|
| 10 | Heating effect caused by an electric circuit is written |
A. H = I2Rt
B. H = I2R
C. H = IR2t
D. H = IR2
|
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