ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

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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Physics ECAT Pre Engineering Chapter 12 Electrostatics

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Question # 1

The electric lines of force are

Question # 2

A current of 1.6 A is passed through a solution of CuSO4. How many Cu2+ions are liberated in one minute?

Question # 3

Ohm's law states that

Question # 4

Electron volt is the unit of

Question # 5

The charge carriers in electrolyte are positive and negative

Question # 6

The dot product of electric field intensity E and vector area A is called

Question # 7

Heating effect caused by an electric circuit is written

Question # 8

The liquid which conduct current is known as

Question # 9

One coulomb per second is equal to

Question # 10

The electric intensity at infinite distance from the point charge will be

Question # 11

Two point charges A and B separated by a distance R attract each other with a force of 12 x 10-3N. The force between A and B when the charges on them are doubled and distance is halved

Question # 12

The charge per unit time through any cross-section of a conductor is called

Question # 13

A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy

Question # 14

The charge carriers in gases are

Question # 15

Battery is charged in motor cars, which is based on

Question # 16

A closed surface contains two equal and opposite charges. The net electric flux from the surface will be

Question # 17

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 # 18

Electron volt is the unit of.

Question # 19

A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts

Question # 20

Ohm is the unit of

Question # 21

Solar cell converts sunlight directly into

Question # 22

The resistance of a conductor does not depend on its

Question # 23

The ratio of the gravitational force Fgto the electrostatic force Febetween two electrons at the same distance apart is approximately

Question # 24

When three identical bulbs of 60 watt, 200 volt rating are connected in series to a 200 volt supply, the power drawn by them will be

Question # 25

When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to

Question # 26

The nature of capacity of electrostatic capacitor depends on

Question # 27

If the distance of separation between two chares is increased, the electrical potential energy of the system will

Question # 28

Ohm established a relation between

Question # 29

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 # 30

When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 Physicist George Simon ohm was a
A. German physical
B. French physicist
C. Chinese physicist
D. Russian physicist
2 Three resistors of resistance R each are combined in various ways. Which of the following cannot be obtained?
A. 3RΩ
B. 2R/4Ω
C. R/3Ω
D. 2R/3Ω
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 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
5 Which of the following does not obey ohm's law?
A. Copper
B. Al
C. Diode
D. None
6 Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is
A. 11.0 ohm
B. 1.0 ohm
C. 7.0 ohm
D. 3.0 ohm
7 The charge carriers in gases are
A. electrons
B. ions
C. protons
D. ions and electrons
8 If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be
A. 5μF
B. 20μF
C. 10μF
D. 15μF
9 The current through a metallic conductor is due to the motion of
A. protons
B. neutrons
C. electrons
D. free electrons
10 Which one of the following has larger value of relative permitivity Erat room temperature?
A. Vaccum
B. Air
C. Glass
D. Water

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