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

Free electrons are

Question # 2

The resistance of a conductor does not depend on its

Question # 3

A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is

Question # 4

The fractional change in resistance per kelvin is known as

Question # 5

In bringing an electron towards another electron, electrostatic potential energy of system

Question # 6

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 # 7

Electron volt is the unit of

Question # 8

Electric generators which convert mechanical energy into

Question # 9

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

Question # 10

Coulomb force, when any material medium is placed between two charges

Question # 11

The earth's potential is taken as

Question # 12

The electric intensity outside the two oppositely charged parallel metal plates is

Question # 13

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

Question # 14

The unit of resistivity is

Question # 15

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 # 16

Cause of heat production in a current carrying conductor is

Question # 17

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

Question # 18

The SI unit of electric flux is

Question # 19

An alpha particle is accelerated through a potential difference of 106volt. Its kinetic energy will be

Question # 20

The nature of capacity of electrostatic capacitor depends on

Question # 21

The electric flux from a closed surface

Question # 22

The material in the form of wire or rod or plate which leads the current into or cut of the electrolyte is known as

Question # 23

The concept of field theory was put forward by

Question # 24

Specific resistance of a wire depends upon

Question # 25

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

Question # 26

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

Question # 27

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

Question # 28

Capacitance of two or more capacitors

Question # 29

The electric field due to an infinite long thin wire at a distance R varies as

Question # 30

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

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 The material in the form of wire or rod or plate which leads the current into or cut of the electrolyte is known as
A. voltmeters
B. resistance
C. electrode
D. current
2 The dot product of electric field intensity E and vector area A is called
A. Electric potential
B. Electric flux
C. Electric field
D. Magnetic field
3 A closed surface contains two equal and opposite charges. The net electric flux from the surface will be
A. Negative
B. Positive
C. Infinite
D. Zero
4 Ohm is the unit of
A. current
B. capacitance
C. energy
D. resistance
5 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
6 A (100 W , 200 W) bulb is connected to a 160 V power supply. The power consumption would be
A. 64 W
B. 80 W
C. 100 W
D. 125 W
7 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
8 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
9 A 50 volt battery is connected across 10 ohm resistor. The current is 4.5 A. The internal resistance of the battery is
A. Zero
B. 0.5Ω
C. 1.1Ω
D. 5.0Ω
10 When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to
A. One joule
B. One erg
C. One electron volt
D. None of these

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