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

A 60 W bulb operates on 220 V supply. The current flowing through the bulb is

Question # 2

Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is

Question # 3

Coulomb's force between two point charges depends upon

Question # 4

The concept of field theory was put forward by

Question # 5

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 # 6

Electron volt is the unit of.

Question # 7

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

Question # 8

If we increase the distance between two plates of the capacitor, the capacitance will

Question # 9

Consider a spherical shell of metal at he centre of which a positive point charge is kept

Question # 10

The relation V = IR represents

Question # 11

Some charge is being given to a conductor. Then its potential

Question # 12

The electric field intensity at a point due to a point charge

Question # 13

The electric flux from a closed surface

Question # 14

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

Question # 15

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

Question # 16

A (100 W , 200 W) bulb is connected to a 160 V power supply. The power consumption would be

Question # 17

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 # 18

The earth's potential is taken as

Question # 19

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

Question # 20

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 # 21

Heating effect caused by an electric circuit is written

Question # 22

A 50 volt battery is connected across 10 ohm resistor. The current is 4.5 A. The internal resistance of the battery is

Question # 23

The charge carriers in electrolyte are positive and negative

Question # 24

The SI unit of electric field intensity is

Question # 25

Resistor is a device which convert electric energy to

Question # 26

Current provided by a battery is maximum when

Question # 27

One joule is equal to

Question # 28

The force between two chares 0.06 m apart is 5 N. If each charge is moved towards the other by 0.01 m, then the force between them will become

Question # 29

Capacitance of two or more capacitors

Question # 30

The liquid which conduct current is known as

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 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
A. 1840 KeV
B. 1/1840 KeV
C. 1 KeV
D. 920 KeV
2 Battery is charged in motor cars, which is based on
A. Chemical effect
B. Magnetic effect
C. Electric effect
D. None
3 The SI unit of electric flux is
A. Weber
B. Nm2C-1
C. NmC-1
D. Nm-2C
4 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
A. Two
B. 1/2
C. Zero
D. 3/2
5 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
A. 1/3 V
B. 2/3 V
C. 3/2 V
D. 3V
6 The substances whose resistance decreases with the increase in temperature these substances have coefficient of
A. positive temperature
B. negative temperature
C. absolute temperature
D. zero temperature
7 Thermocouple is an arrangement of two different metals
A. To convert heat energy in to electrical energy
B. To produce more heat
C. To convert heat energy into chemical energy
D. To convert electric energy in to heat energy
8 Which of the following does not obey ohm's law?
A. Copper
B. Al
C. Diode
D. None
9 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
A. 120 C
B. 240 C
C. 20 C
D. 4 C
10 The capacity of a parallel plat capacitor depends on the
A. Type to metal used
B. Thickness of plates
C. Potential applied across the plates
D. Separation between the plates

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