ECAT Pre General Science Physics Chapter 12 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 12 Electrostatics

Try The MCQ's Test For ECAT Pre General Science Physics Chapter 12 Electrostatics

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ECAT Pre General Science Physics Chapter 12 Electrostatics

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Question # 1

The resistance of a conductor does not depend on its

Question # 2

A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts

Question # 3

The thermistors are usually made of

Question # 4

Resistor is a device which convert electric energy to

Question # 5

Ohm established a relation between

Question # 6

If the length of the conductor is double and its cross sectional area is halved, its conductance will

Question # 7

The concept of field theory was put forward by

Question # 8

The fractional change in resistance per kelvin is known as

Question # 9

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

Question # 10

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

Question # 11

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 # 12

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

Question # 13

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

Question # 14

The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is

Question # 15

The capacity of a parallel plat capacitor depends on the

Question # 16

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

Question # 17

The SI unit of conductivity is

Question # 18

A piece of fuse wire melts when a current of 15 ampere flows through it. With this current. If it dissipates 22.5 W, the resistance of fuse wire will be

Question # 19

Electric flux is defined by the relation

Question # 20

Battery is charged in motor cars, which is based on

Question # 21

In RC series circuit the time during which the capacitor acquires 0.63 times the equilibrium charge is called

Question # 22

A conducting wire is drawn to double its length. Final resistivity of the material will be

Question # 23

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

Question # 24

One coulomb per second is equal to

Question # 25

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

Question # 26

When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates

Question # 27

The electric lines of force are

Question # 28

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

Question # 29

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 # 30

One coulomb of charge is created by

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 Physicist George Simon ohm was a
A. German physical
B. French physicist
C. Chinese physicist
D. Russian physicist
2 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
3 Potentiometer is more sensitive than voltmeter, because
A. Voltmeter has a very high resistance
B. Voltmeter has a very low resistance
C. Potentiometer does not draw any current from a source of unknown potential difference
D. Potentiometer is sensitive
4 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
5 Which of the following does not obey ohm's law?
A. Copper
B. Al
C. Diode
D. None
6 If the two charges in Coulomb's law have double distance between them, then electric force
A. Becomes two-fold
B. Becomes four-fold
C. Remains the same
D. None of these
7 The electric flux from a closed surface
A. Is independent of the shape of the surface
B. Depends on the charge enclosed by the surface
C. Both a and b
D. None of the above
8
Question Image
A. 5μF
B. 10μF
C. 3μF
D. 6μF
9 If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us
A. parabola
B. straight line
C. hyper bola
D. ellipse
10 Resistor is a device which convert electric energy to
A. Heat energy
B. Chemical energy
C. Elastic energy
D. All of the above

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