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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
A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy
Question # 2
If a 40 watt light bulb burns for 2 hours. how much heat is generated
Question # 3
An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be
Question # 4
Electric generators which convert mechanical energy into
Question # 5
A heater coil rated at (1000 W - 200 V) is connected to 110 volt line. What will be the power consumed?
Question # 6
An electric charge at rest is
Question # 7
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
Question # 8
Heating effect caused by an electric circuit is written
Question # 9
The relation between the charge Q of a parallel plate capacitor and the P.D between its plates is
Question # 10
Coulomb's force between two point charges depends upon
Question # 11
A closed surface contains two equal and opposite charges. The net electric flux from the surface will be
Question # 12
The fractional change in resistance per kelvin is known as
Question # 13
The capacity of a parallel plat capacitor depends on the
Question # 14
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 # 15
The electric field will be uniform
Question # 16
Thermocouple is an arrangement of two different metals
Question # 17
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 # 18
One moving a charge of 20 coulombs by 2 cm, 2 J of work is done, then the potential difference between the points is
Question # 19
The relation between charge 'Q' and current 'I' is given by
Question # 20
A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?
Question # 21
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 # 22
What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts?
Question # 23
The unit of intensity of electric field is
Question # 24
Three resistors of resistance R each are combined in various ways. Which of the following cannot be obtained?
Question # 25
The earth's potential is taken as
Question # 26
The substances whose resistance decreases with the increase in temperature these substances have coefficient of
Question # 27
The unit of resistance is
Question # 28
Ohm's law states that
Question # 29
The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is
Question # 30
Two point charge +3μC and +8μC repel each other with a force of 40 N. If a charge of -5μC is added to each of them, then the force between then will become
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 | 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
|
| 2 | 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
|
| 3 | If the distance of separation between two chares is increased, the electrical potential energy of the system will |
A. Increase
B. Decrease
C. May increase or decrease
D. Remain the same
|
| 4 | 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
|
| 5 | 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
|
| 6 | The colour sequence in a carbon resistor in red, brown, orange and silver. The resistance of the resistor is |
A. 21 x 103+ 10%
B. 23 x 101+ 10%
C. 21 x 103+ 5%
D. 12 x 103+ 5%
|
| 7 |
|
A. 5μF
B. 10μF
C. 3μF
D. 6μF
|
| 8 | An electric charge at rest is |
A. Only an electric field
B. Only a magnetic field
C. Both electric and magnetic fields
D. None of the above
|
| 9 | The charge per unit time through any cross-section of a conductor is called |
A. capacitance
B. electric power
C. current
D. potential difference
|
| 10 | The value of electrical constant of proportionality k is |
A. 9 x 109Nm2C-2
B. 9 x 10-9Nm2C-2
C. 9 x 1010Nm2C2
D. 9.85 x 10-12N-1C-2
|
Test Questions