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

Which one of the following causes production of heat when current is set up in a wire?

Question # 2

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 # 3

106electrons are moving through a wire per second, the current developed is

Question # 4

Ohm is the unit of

Question # 5

A capacitor of capacity 1μF is charged to 1 KV. The energy stored in J

Question # 6

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 # 7

A condenser of capacity 50μF is charged to 10 V.The energy stored is

Question # 8

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

Question # 9

The unit of conductance is

Question # 10

The electrode connected with the positive terminal of the current source is called

Question # 11

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

Question # 12

Ohm established a relation between

Question # 13

Resistance of a conductor is increased, the currant will

Question # 14

One coulomb of charge is created by

Question # 15

Battery is charged in motor cars, which is based on

Question # 16

The SI unit of current is

Question # 17

The value of electrical constant of proportionality k is

Question # 18

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 # 19

Which of the following does not obey ohm's law?

Question # 20

The liquid which conduct current is known as

Question # 21

The speed of randomly moving electrons depends upon

Question # 22

The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is

Question # 23

The charge carriers in gases are

Question # 24

The charge carriers in electrolyte are positive and negative

Question # 25

If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be

Question # 26

Three resistors of resistance R each are combined in various ways. Which of the following cannot be obtained?

Question # 27

The substances whose resistance decreases with the increase in temperature these substances have coefficient of

Question # 28

At any point on the right bisector of the line joining two equal and opposite charges

Question # 29

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 # 30

If an electron of charge 'e' is accelerated through a potential difference V., it will acquire energy

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 Ohm established a relation between
A. voltage and resistance
B. voltage and charge
C. voltage and current
D. voltage resistance and charge
2 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
A. q = Q/4
B. q = Q/2
C. q = !
D. None of these
3 The unit of resistance is
A. volt
B. ampere
C. ohm
D. coat
4
Question Image
A. 5μF
B. 10μF
C. 3μF
D. 6μF
5 In a voltmeter the conduction takes place due to
A. Electrons only
B. Holes only
C. Electrons and holes
D. Electrons and ions
6 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
A. 2 R
B. R
C. R/2
D. R/4
7 The energy stored in a charge capacitor
A. 1/2CV2
B. 1/2C2V
C. 1/2C/V2
D. None of these
8 The liquid which conduct current is known as
A. heating effect
B. chemical energy
C. electrolyte
D. ohm's law
9 The resistivity of a substance depends upon the
A. length
B. mass
C. area
D. temperature
10 In bringing an electron towards another electron, electrostatic potential energy of system
A. Decreases
B. Increases
C. Remains uncharged
D. Becomes zero

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