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 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 # 2

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

Question # 3

The capacitance of a parallel plate capacitor depends upon

Question # 4

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 # 5

If the two charges in Coulomb's law have double distance between them, then electric force

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

The SI unit of current is

Question # 10

The minimum charge on any object can not be less than

Question # 11

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

Question # 12

Which one of the following is the unit of electric field intensity

Question # 13

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

Question # 14

If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us

Question # 15

The potential difference across each resistance in series combination is

Question # 16

The nature of capacity of electrostatic capacitor depends on

Question # 17

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

Question # 18

If 2.2 kilowatt power is transmitted through a 10 ohm line at 22000 volt, the power loss in the form of heat will be

Question # 19

At ordinary temperature, an increase in temperature increases the conductivity of

Question # 20

Resistance of a conductor depends upon

Question # 21

Resistor is a device which convert electric energy to

Question # 22

Free electrons are

Question # 23

A 10 F capacitor is charged to a potential difference of 50 V and is connected to another uncharged capacitor in parallel. Now the common potential difference becomes 20 volt.The capacitance of second capacitor is

Question # 24

Solar cell converts sunlight directly into

Question # 25

If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be

Question # 26

The electric field will be uniform

Question # 27

A hollow insulated conduction sphere is given a positive charge of 10μC. What will be the electric field at the centre of the sphere if its radius is 2 meters?

Question # 28

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

Question # 29

The electric lines of force are

Question # 30

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

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 A 100 W, 200 V bulb is connected to a 160 volts supply. The actual power consumption would be
A. 64 W
B. 80 W
C. 100 W
D. 125 W
2 Ohm is the unit of
A. current
B. capacitance
C. energy
D. resistance
3 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
4 Electron volt is the unit of.
A. Potential difference
B. Energy
C. Resistance
D. Capacitance
5 A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor
A. Increases
B. Decreases
C. Remain unchanged
D. Becomes infinite
6 A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?
A. 108 g
B. 10.8 g
C. 0.8 g
D. 108/0.8 g
7 A medium of dielectric constant 'K' is introduced between the plates of parallel plate condenser. As a result its capcitance
A. Increase k time
B. Decreases k times
C. Decreases 1/K times
D. Remains unchanged
8 What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts?
A. 10-1A
B. 10-2A
C. 10-4A
D. 1 mA
9 The electric field due to an infinite long thin wire at a distance R varies as
A. 1/R
B. 1/R2
C. R
D. R2
10 If a 40 watt light bulb burns for 2 hours. how much heat is generated
A. 288 x 103J
B. 288 x 108J
C. 288 x 105J
D. 288 x 106J

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