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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
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 # 2
If the distance of separation between two chares is increased, the electrical potential energy of the system will
Question # 3
A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy
Question # 4
Solar cell converts sunlight directly into
Question # 5
One electron volt is equal to
Question # 6
The thermistors are usually made of
Question # 7
Which one of the following is the unit of electric field intensity
Question # 8
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 # 9
The ohm's is defined as
Question # 10
The earth's potential is taken as
Question # 11
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
Question # 12
The potential difference across the conductors should be maintained constant by connecting the ends of wire to the terminal of a device called a source of
Question # 13
The unit of conductance is
Question # 14
If 2.2 kilowatt power is transmitted through 1 10 ohm line at 22000 volt, the power loss in the form of heat will be
Question # 15
The electric field due to an infinite long thin wire at a distance R varies as
Question # 16
The electric intensity at infinite distance from the point charge will be
Question # 17
An alpha particle is accelerated through a potential difference of 106volt. Its kinetic energy will be
Question # 18
When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to
Question # 19
The concept of field theory was put forward by
Question # 20
A wire is bent into a ring of radius R is given a charge q. The magnitude of the electrical field at the centre of the ring is
Question # 21
The resistance of an incandescent lamp is
Question # 22
A charge Q is divided into two parts q and Q - q and separated by a distance R. The force of repulsion between them will be maximum when
Question # 23
An electric dipole is at the centre of a hollow sphere of radius r. The total normal electric flux through the sphere is (here Q is the charge and d is the distance between the two charges of the dipole)
Question # 24
The energy stored in a charge capacitor
Question # 25
One coulomb per second is equal to
Question # 26
Which one of the following causes production of heat when current is set up in a wire?
Question # 27
In bringing an electron towards another electron, electrostatic potential energy of system
Question # 28
In a voltmeter the conduction takes place due to
Question # 29
The SI unit of capacitance is
Question # 30
If an electron of charge 'e' is accelerated through a potential difference V., it will acquire energy
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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H Humera Noor 27 - Dec - 2024 19 Min 28 Sec 65/120
ECAT Physics Chapter 12 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy |
A. 200 J
B. 100 J
C. 1000 J
D. 400 J
|
| 2 | An electric dipole is at the centre of a hollow sphere of radius r. The total normal electric flux through the sphere is (here Q is the charge and d is the distance between the two charges of the dipole) |
A. Q/4πr2
B. 2Q/4πr2
C. Q.d
D. Zero
|
| 3 | The conductivity of a superconductor is |
A. Infinite
B. Very large
C. Very small
D. Zero
|
| 4 | Battery is charged in motor cars, which is based on |
A. Chemical effect
B. Magnetic effect
C. Electric effect
D. None
|
| 5 | The electric intensity at infinite distance from the point charge will be |
A. Infinite
B. Positive
C. Zero
D. Negative
|
| 6 | 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
|
| 7 | A current of 1.6 A is passed through a solution of CuSO4. How many Cu2+ions are liberated in one minute? |
A. 3 x 1020
B. 3 x 1010
C. 6 x 1020
D. 6 x 1010
|
| 8 | In a charged capacitor the energy is stored in |
A. Both in positive and negative charges
B. Positive charges
C. The edges of the capacitor plates
D. The electric field between the plates
|
| 9 | The resistance of an incandescent lamp is |
A. Smaller when switched on
B. Greater when switched off
C. The same whether it is switch off or switch on
D. Greater when switched on
|
| 10 | Ohm's law states that |
A. The current through a resistor is directly proportional to the applied voltage
B. The voltage across a resistor is directly proportional to the current passing through it
C. Resistance is the constant of proportionality between the voltage and current
D. all of these
|
Test Questions