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

Solar cell converts sunlight directly into

Question # 2

The resistance of a conductor does not depend on its

Question # 3

The minimum charge on any object can not be less than

Question # 4

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 # 5

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

Question # 6

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 # 7

Electric generators which convert mechanical energy into

Question # 8

The fractional change in resistance per kelvin is known as

Question # 9

Coulomb's force between two point charges depends upon

Question # 10

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 # 11

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

Question # 12

The energy stored in a charge capacitor

Question # 13

Thermocouple is an arrangement of two different metals

Question # 14

The unit of intensity of electric field is

Question # 15

The relation V = IR represents

Question # 16

The charge carriers in electrolyte are positive and negative

Question # 17

The electric flux is linked with a surface will be maximum when

Question # 18

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 # 19

The unit of resistivity is

Question # 20

Capacitance of two or more capacitors

Question # 21

The powers of tow electric bulbs are 100 W and 200 W. Both of them are joined with 220 V mains. The ratio of resistances of their filaments will be

Question # 22

One coulomb of charge is created by

Question # 23

The energy required to charge a capacitor of 5μF by connecting D.C. source of 20 KV is

Question # 24

The ohm's is defined as

Question # 25

In case of a parallel plate capacitor if the plate separation is doubled and plate area is halved, the capacitance becomes

Question # 26

Electric potential of earth is taken to be zero because the earth is good

Question # 27

A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?

Question # 28

The SI unit of electric field intensity is

Question # 29

Three resistance 500,500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be

Question # 30

Taking the earth to be a spherical conductor of diameter 12.8 x 103km. Its capacity will be

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
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
A. Coulomb's law
B. Gauss's law
C. Biot-Sarwat law
D. Ampere's law
2 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
A. 180 watt
B. 10 watt
C. 20 watt
D. 60 watt
3 A car battery has e.m.f 12 volt and internal resistance 5 x 10-2ohm. If it draws 60 ampere current, the terminal voltage of the battery will be
A. 5 volt
B. 3 volt
C. 15 volt
D. 9 volt
4 Battery is charged in motor cars, which is based on
A. Chemical effect
B. Magnetic effect
C. Electric effect
D. None
5 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
6 Which one of the following is the unit of electric field intensity
A. JC-1
B. Vm-1
C. Cm-1
D. CJ-1
7 One coulomb per second is equal to
A. One volt
B. One ampere
C. One hom
D. One henry
8 Electric generators which convert mechanical energy into
A. solar energy
B. thermal energy
C. kinetic energy
D. electrical energy
9 Equal charges are given to two spheres of different radii. The potential will
A. Be more on the smaller sphere
B. Be more on the bigger sphere
C. Be equal on both the sphere
D. Depend on the nature of the material of the sphere
10 The thermistors are usually made of
A. Metals with low temperature coefficient of resistivity
B. Metals with high temperature coefficient of resistivity
C. Metal oxides with high temperature coefficient of resistivity
D. Semi conducting materials having low temperature coefficient of resistivity

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