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

In a voltmeter the conduction takes place due to

Question # 2

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 # 3

Three resistors of resistance R each are combined in various ways. Which of the following cannot be obtained?

Question # 4

The energy stored in a charge capacitor

Question # 5

One electron volt is equal to

Question # 6

Two conductors having the same type of charges are connected by a conducting wire. There would not be any amount of charges on them if

Question # 7

The conductivity of a superconductor is

Question # 8

Electric flux is defined by the relation

Question # 9

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

Question # 10

The current through a metallic conductor is due to the motion of

Question # 11

A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor

Question # 12

Two point charge +3μC and +8μC repel each other with a force of 40 N. If a charge of -5μC is added to each of them, then the force between then will become

Question # 13

The concept of field theory was put forward by

Question # 14

The SI unit of capacitance is

Question # 15

Calculate the amount of charge flowing in 2 minutes in a wire of resistance 10Ωwhen a potential difference of 20 V is applied between its ends

Question # 16

Resistor is a device which convert electric energy to

Question # 17

Potentiometer is more sensitive than voltmeter, because

Question # 18

The unit of intensity of electric field is

Question # 19

A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy

Question # 20

The SI unit of current is

Question # 21

Ohm established a relation between

Question # 22

If one volt is needed to cause a current of one ampere to flow in a conductor, its resistance is

Question # 23

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 # 24

Which of the following represents an electric current?

Question # 25

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

Question # 26

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

Question # 27

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

Question # 28

The force between two chares 0.06 m apart is 5 N. If each charge is moved towards the other by 0.01 m, then the force between them will become

Question # 29

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 # 30

The potential difference across each resistance in series combination is

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 The force between two chares 0.06 m apart is 5 N. If each charge is moved towards the other by 0.01 m, then the force between them will become
A. 7.20 N
B. 11.25 N
C. 22.50 N
D. 45.00
2 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
3 The current through a metallic conductor is due to the motion of
A. protons
B. neutrons
C. electrons
D. free electrons
4 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
A. 1 : 2
B. 2 : 1
C. 1 : 4
D. 4 : 1
5 If a charged spherical conductor of radius 10 cm has potential V at a point distance 5 cm from its centre, then the potential at a point distance 15 cm from the centre will be
A. 1/3 V
B. 2/3 V
C. 3/2 V
D. 3V
6 The SI unit of capacitance is
A. Farad
B. Henry
C. Ohm
D. Volt
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 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
A. power
B. current
C. resistance
D. temperature
9 If we increase the distance between two plates of the capacitor, the capacitance will
A. Increase
B. Decrease
C. Remain same
D. First increase then decrease
10 The colour sequence in a carbon resistor in red, brown, orange and silver. The resistance of the resistor is
A. 21 x 103+ 10%
B. 23 x 101+ 10%
C. 21 x 103+ 5%
D. 12 x 103+ 5%

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