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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
A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, then
Question # 2
The substances whose resistance decreases with the increase in temperature these substances have coefficient of
Question # 3
A uniform resistance wire of Length L and diameter d has a resistance R. Another wire of same material has length, 4L and diameter 2d, the resistance will be
Question # 4
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 # 5
The capacitance of a parallel plate capacitor depends upon
Question # 6
Ohm established a relation between
Question # 7
The SI unit of permitivity is
Question # 8
An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be
Question # 9
In a charged capacitor the energy is stored in
Question # 10
A closed surface contains two equal and opposite charges. The net electric flux from the surface will be
Question # 11
In case of a parallel plate capacitor if the plate separation is doubled and plate area is halved, the capacitance becomes
Question # 12
A capacitor of capacity 1μF is charged to 1 KV. The energy stored in J
Question # 13
The material in the form of wire or rod or plate which leads the current into or cut of the electrolyte is known as
Question # 14
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 # 15
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
Question # 16
In a voltmeter the conduction takes place due to
Question # 17
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 # 18
Electron volt is the unit of
Question # 19
A current of 1.6 A is passed through a solution of CuSO4. How many Cu2+ions are liberated in one minute?
Question # 20
A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy
Question # 21
What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts?
Question # 22
A proton is about 1840 times heavier than an electron. When it is accelerated by a potential difference of 1 KV, its kinetic energy will be
Question # 23
A 60 W bulb operates on 220 V supply. The current flowing through the bulb is
Question # 24
The liquid which conduct current is known as
Question # 25
Calculate the amount of charge flowing in 2 minutes in a wire of resistance 10Ωwhen a potential difference of 20 V is applied between its ends
Question # 26
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)
Question # 27
In Pakistan electricity is supplied for domestic use at 220 V, it is supplied at 110 V in USA. If the resistance of a 60 W bulb for use in Pakistan is R, the resistance of a 60 W bulb for use in USA will be
Question # 28
Physicist George Simon ohm was a
Question # 29
Free electrons are
Question # 30
An electric charge at rest 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 -
N Nitalaya Hassan 23 - Dec - 2024 06 Min 15 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 -
H Hanook Masih 25 - Sep - 2024 12 Min 15 Sec 75/120 -
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H hussain naqvi 19 - Sep - 2024 18 Min 43 Sec 65/120 -
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Z Zaka Ullah 09 - Nov - 2024 07 Min 20 Sec 60/120 -
A Abdulrehman Haroon 26 - Sep - 2024 28 Min 20 Sec 60/120 -
1 123 Abcd 07 - Nov - 2024 12 Min 46 Sec 55/120
ECAT Physics Chapter 12 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | The current through a metallic conductor is due to the motion of |
A. protons
B. neutrons
C. electrons
D. free electrons
|
| 2 | 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 |
A. -q
B. +q
C. -2q
D. +4q
|
| 3 | The relation between charge 'Q' and current 'I' is given by |
A. Q = I/t
B. Q = It
C. Q = I2t
D. Q = I2/t
|
| 4 | One moving a charge of 20 coulombs by 2 cm, 2 J of work is done, then the potential difference between the points is |
A. 0.1 V
B. 8 V
C. 2 V
D. 0.5 V
|
| 5 | Ohm is the unit of |
A. current
B. capacitance
C. energy
D. resistance
|
| 6 | The charge carriers in electrolyte are positive and negative |
A. protons
B. electrons
C. ions
D. none of these
|
| 7 | 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
|
| 8 | 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
|
| 9 | The unit of intensity of electric field is |
A. newton/coluomb
B. jule/coluomb
C. volt x metre
D. newton/metre
|
| 10 | Specific resistance of a wire depends upon |
A. Length
B. Cross-section area
C. Mass
D. None
|
Test Questions