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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 lines of force are
Question # 2
A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is
Question # 3
The SI unit of conductivity is
Question # 4
If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be
Question # 5
If an electron of charge 'e' is accelerated through a potential difference V., it will acquire energy
Question # 6
Coulomb's force between two point charges depends upon
Question # 7
What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts?
Question # 8
A cube of metal is given a positive charge Q. For the above system, which of the following statements is true?
Question # 9
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
Question # 10
Which one of the following causes production of heat when current is set up in a wire?
Question # 11
The thermistors are usually made of
Question # 12
The substances whose resistance decreases with the increase in temperature these substances have coefficient of
Question # 13
The electric field intensity at a point due to a point charge
Question # 14
Electron volt is the unit of.
Question # 15
The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is
Question # 16
A conducting wire is drawn to double its length. Final resistivity of the material will be
Question # 17
The electric intensity at infinite distance from the point charge will be
Question # 18
The capacity of a parallel plat capacitor depends on the
Question # 19
If one volt is needed to cause a current of one ampere to flow in a conductor, its resistance is
Question # 20
The resistance of a conductor does not depend on its
Question # 21
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 # 22
The nature of capacity of electrostatic capacitor depends on
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
A condenser of capacity 50μF is charged to 10 V.The energy stored is
Question # 25
One coulomb per second is equal to
Question # 26
A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?
Question # 27
The ohm's is defined as
Question # 28
In a voltmeter the conduction takes place due to
Question # 29
The value of electrical constant of proportionality k is
Question # 30
A metal plate of thickness half the separation between the capacitor plates of capacitance C is inserted. The new capacitance is
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 -
S Sualeh Murtaza 15 - Nov - 2024 05 Min 29 Sec 80/120 -
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F Fatima Anis 26 - Dec - 2024 13 Min 35 Sec 80/120 -
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ECAT Physics Chapter 12 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | If a charged spherical conductor of radius 10 cm has potential V at a point distance 5 cm from its centre, then the potential at a point distance 15 cm from the centre will be |
A. 1/3 V
B. 2/3 V
C. 3/2 V
D. 3V
|
| 2 | Electron volt is the unit of |
A. Potential difference
B. Energy
C. Resistance
D. Capacitance
|
| 3 | A closed surface contains two equal and opposite charges. The net electric flux from the surface will be |
A. Negative
B. Positive
C. Infinite
D. Zero
|
| 4 | Magnetic effect at a point caused due to flow a current depend upon the |
A. Quantity of current
B. Distance from current
C. Both the quantity of current and distance from current element
D. None of the all
|
| 5 | The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is |
A. 10Ω
B. 20Ω
C. 30Ω
D. 40Ω
|
| 6 | The electric flux is linked with a surface will be maximum when |
A. The surface is held parallel to the electric field
B. The surface is held perpendicular to the electric field
C. The surface makes an angle of 45° with the electric field
D. All of the above
|
| 7 | The energy required to charge a capacitor of 5μF by connecting D.C. source of 20 KV is |
A. 10 KJ
B. 5 KJ
C. 2 KJ
D. 1 KJ
|
| 8 | The earth's potential is taken as |
A. Negative
B. Positive
C. Zero
D. Infinite
|
| 9 | A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts |
A. 1310 W
B. 670 W
C. 810 W
D. 1210 W
|
| 10 | Free electrons are |
A. tightly bound
B. fixed
C. loosely bound
D. tightly fixed
|
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