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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
00:00
Question # 1
Cause of heat production in a current carrying conductor is
Question # 2
The ohm's is defined as
Question # 3
Consider a spherical shell of metal at he centre of which a positive point charge is kept
Question # 4
Resistance of a conductor depends upon
Question # 5
The relation between the charge Q of a parallel plate capacitor and the P.D between its plates is
Question # 6
A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is
Question # 7
The resistance of an incandescent lamp is
Question # 8
Specific resistance of a wire depends upon
Question # 9
A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts
Question # 10
Magnetic effect at a point caused due to flow a current depend upon the
Question # 11
106electrons are moving through a wire per second, the current developed is
Question # 12
Ohm is the unit of
Question # 13
When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates
Question # 14
The energy stored in a charge capacitor
Question # 15
The charge carriers in electrolyte are positive and negative
Question # 16
The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10-15 is
Question # 17
The energy required to charge a capacitor of 5μF by connecting D.C. source of 20 KV is
Question # 18
If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be
Question # 19
A 60 W bulb operates on 220 V supply. The current flowing through the bulb is
Question # 20
In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10-19C. The number of excess electrons on the drop is
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
The electric lines of force are
Question # 23
Battery is charged in motor cars, which is based on
Question # 24
One coulomb of charge is created by
Question # 25
Coulomb force, when any material medium is placed between two charges
Question # 26
Electron volt is the unit of
Question # 27
Free electrons are
Question # 28
One electron volt is equal to
Question # 29
The electric flux is linked with a surface will be maximum when
Question # 30
Three resistance 500,500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be
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 -
N Nitalaya Hassan 23 - Dec - 2024 06 Min 15 Sec 80/120 -
T Talha Khalil 18 - Jun - 2026 10 Min 55 Sec 80/120 -
F Fatima Anis 26 - Dec - 2024 13 Min 35 Sec 80/120 -
A Abdullah Zubair 25 - Dec - 2024 14 Min 30 Sec 80/120 -
C Ch Ubaid Ullah 06 - Mar - 2026 17 Min 40 Sec 80/120 -
A Ahmad Sufyan 05 - May - 2026 18 Min 20 Sec 80/120 -
H Hanook Masih 25 - Sep - 2024 12 Min 15 Sec 75/120 -
F Furqan Asif 26 - Mar - 2026 36 Min 02 Sec 72/120 -
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H hussain naqvi 19 - Sep - 2024 18 Min 43 Sec 65/120 -
H Humera Noor 27 - Dec - 2024 19 Min 28 Sec 65/120
ECAT Physics Chapter 12 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | A 50 volt battery is connected across 10 ohm resistor. The current is 4.5 A. The internal resistance of the battery is |
A. Zero
B. 0.5Ω
C. 1.1Ω
D. 5.0Ω
|
| 2 | A wire of radius r has resistance R. If it is stretched to a wire of r/2 radius, then the resistance becomes |
A. 2R
B. 4R
C. 16R
D. Zero
|
| 3 | Which one of the following has larger value of relative permitivity Erat room temperature? |
A. Vaccum
B. Air
C. Glass
D. Water
|
| 4 | The SI unit of current is |
A. watt
B. coulomb
C. volt
D. ampere
|
| 5 | The force of repulsion between two point charges is F, when these are at a distance 0.1 m apart. Now the point charges are replaced by sphere of radii 5 cm each having the same charge as that of the respective point charges. The distance between their centre is again kept 0.1 m ; then the force of repulsion will |
A. Increase
B. Decrease
C. Remain F
D. Become 10F/9
|
| 6 | The electric field will be uniform |
A. Near a positive point charge
B. Near a negative point charge
C. Between two oppositely charged parallel metal plates
D. None of above
|
| 7 | 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 |
A. 25
B. 225
C. 625
D. 1250
|
| 8 | The earth's potential is taken as |
A. Negative
B. Positive
C. Zero
D. Infinite
|
| 9 | Electron volt is the unit of. |
A. Potential difference
B. Energy
C. Resistance
D. Capacitance
|
| 10 | 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
|
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