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

If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be

Question # 2

Current provided by a battery is maximum when

Question # 3

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

Question # 4

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

Question # 5

One coulomb of charge is created by

Question # 6

The minimum charge on any object can not be less than

Question # 7

The concept of field theory was put forward by

Question # 8

The SI unit of conductivity is

Question # 9

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 # 10

A 60 W bulb operates on 220 V supply. The current flowing through the bulb is

Question # 11

A one microfarad capacitor of a TV is subjected to 4000 V potential difference. The energy stored in capacitor is

Question # 12

The substances whose resistance decreases with the increase in temperature these substances have coefficient of

Question # 13

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

Question # 14

The electric lines of force are

Question # 15

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

Question # 16

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 # 17

The capacitance of a parallel plate capacitor depends upon

Question # 18

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

Question # 19

The electric flux from a closed surface

Question # 20

The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10-15 is

Question # 21

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 # 22

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

Question # 23

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

Question # 24

The ratio of the gravitational force Fgto the electrostatic force Febetween two electrons at the same distance apart is approximately

Question # 25

The unit of resistance is

Question # 26

The resistivity of a substance depends upon the

Question # 27

Electric flux is defined by the relation

Question # 28

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 # 29

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

Question # 30

A wire of radius r has resistance R. If it is stretched to a wire of r/2 radius, then the resistance becomes

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 Which one of the following has larger value of relative permitivity Erat room temperature?
A. Vaccum
B. Air
C. Glass
D. Water
2 The nature of capacity of electrostatic capacitor depends on
A. Shape
B. Size
C. Thickness of plates
D. Area
3 An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be
A. V/e
B. eV
C. e/V
D. V
4 The fractional change in resistance per kelvin is known as
A. temperature coefficient
B. resistance coefficient
C. super temperature
D. critical temperature
5 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
6 In a voltmeter the conduction takes place due to
A. Electrons only
B. Holes only
C. Electrons and holes
D. Electrons and ions
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 Specific resistance of a wire depends upon
A. Length
B. Cross-section area
C. Mass
D. None
9 A current of 1.6 A is passed through a solution of CuSO4. How many Cu2+ions are liberated in one minute?
A. 3 x 1020
B. 3 x 1010
C. 6 x 1020
D. 6 x 1010
10 An electric charge at rest is
A. Only an electric field
B. Only a magnetic field
C. Both electric and magnetic fields
D. None of the above

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