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 colour sequence in a carbon resistor in red, brown, orange and silver. The resistance of the resistor is

Question # 2

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

Question # 3

The graphical representation of ohm's law is

Question # 4

One coulomb per second is equal to

Question # 5

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 # 6

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

Question # 7

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

Question # 8

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 # 9

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

Question # 10

Ohm's law states that

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

The resistance of a conductor does not depend on its

Question # 16

In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10-19C. The number of excess electrons on the drop is

Question # 17

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 # 18

If electric and gravitational force on an electron in a uniform electric field will be

Question # 19

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 # 20

An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be

Question # 21

The fractional change in resistance per kelvin is known as

Question # 22

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

Question # 23

The liquid which conduct current is known as

Question # 24

Magnetic effect at a point caused due to flow a current depend upon the

Question # 25

Battery is charged in motor cars, which is based on

Question # 26

A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, then

Question # 27

A closed surface contains two equal and opposite charges. The net electric flux from the surface will be

Question # 28

Which of the following represents an electric current?

Question # 29

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

Question # 30

Physicist George Simon ohm was a

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 The unit of intensity of electric field is
A. newton/coluomb
B. jule/coluomb
C. volt x metre
D. newton/metre
2 The SI unit of permitivity is
A. Nm2C2
B. N-1m-2C2
C. NmC2
D. Nm2C-1
3 Which one of the following has larger value of relative permitivity Erat room temperature?
A. Vaccum
B. Air
C. Glass
D. Water
4 The conductivity of a superconductor is
A. Infinite
B. Very large
C. Very small
D. Zero
5 If electric and gravitational force on an electron in a uniform electric field will be
A. E=mg/q
B. E=q/mg
C. E=,g/q
D. E=qg/m
6 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
7 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
8 A 60 W bulb operates on 220 V supply. The current flowing through the bulb is
A. 11/3 A
B. 3 A
C. 3/11 A
D. 6
9 If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be
A. 5μF
B. 20μF
C. 10μF
D. 15μF
10 The electric lines of force are
A. Imaginary
B. Physically existing everywhere
C. Physically existing near the charge
D. All of the above

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