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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 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 # 2
The earth's potential is taken as
Question # 3
What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts?
Question # 4
Resistance of a conductor is increased, the currant will
Question # 5
The resistance of the given conductor can be increased by
Question # 6
A wire of radius r has resistance R. If it is stretched to a wire of r/2 radius, then the resistance becomes
Question # 7
A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts
Question # 8
A conducting wire is drawn to double its length. Final resistivity of the material will be
Question # 9
The graphical representation of ohm's law is
Question # 10
Solar cell converts sunlight directly into
Question # 11
The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is
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
Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is
Question # 14
Battery is charged in motor cars, which is based on
Question # 15
Coulomb's force between two point charges depends upon
Question # 16
The resistivity of a substance depends upon the
Question # 17
A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?
Question # 18
The SI unit of electric flux is
Question # 19
Which one of the following is the unit of electric field intensity
Question # 20
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
Question # 21
A closed surface contains two equal and opposite charges. The net electric flux from the surface will be
Question # 22
Cause of heat production in a current carrying conductor is
Question # 23
The potential difference across each resistance in series combination is
Question # 24
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 # 25
Electric generators which convert mechanical energy into
Question # 26
Ohm's law states that
Question # 27
A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor
Question # 28
If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us
Question # 29
The SI unit of electric field intensity is
Question # 30
The ratio of the gravitational force Fgto the electrostatic force Febetween two electrons at the same distance apart is approximately
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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T Talha Khalil 18 - Jun - 2026 10 Min 55 Sec 80/120 -
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C Ch Ubaid Ullah 06 - Mar - 2026 17 Min 40 Sec 80/120 -
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H Humera Noor 27 - Dec - 2024 19 Min 28 Sec 65/120
ECAT Physics Chapter 12 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Ohm established a relation between |
A. voltage and resistance
B. voltage and charge
C. voltage and current
D. voltage resistance and charge
|
| 2 | A one microfarad capacitor of a TV is subjected to 4000 V potential difference. The energy stored in capacitor is |
A. 8 J
B. 16 J
C. 4 x 10-3J
D. 2 x 10-3J
|
| 3 | One electron volt is equal to |
A. 1.6 x 1019eV
B. 6.25 x 1018 eV
C. 1.6 x 1018 eV
D. 6.25 x 1019eV
|
| 4 | 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
|
| 5 | 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
|
| 6 | A point charge A of charge +4μC and another B of charge -1μC are placed in air at a distance 1 m apart. Then the distance of the point on the line joining the charge B, where the resultant electric field is zero, is (in m) |
A. 2
B. 1
C. 0.5
D. 1.5
|
| 7 | 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
|
| 8 | 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
|
| 9 | A car battery has e.m.f 12 volt and internal resistance 5 x 10-2ohm. If it draws 60 ampere current, the terminal voltage of the battery will be |
A. 5 volt
B. 3 volt
C. 15 volt
D. 9 volt
|
| 10 | An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be |
A. V/e
B. eV
C. e/V
D. V
|
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