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

One coulomb per second is equal to

Question # 2

Surface density of charge is defined as

Question # 3

The resistance of the given conductor can be increased by

Question # 4

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

Question # 5

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

Question # 6

A cube of metal is given a positive charge Q. For the above system, which of the following statements is true?

Question # 7

Ohm is the unit of

Question # 8

The liquid which conduct current is known as

Question # 9

At ordinary temperature, an increase in temperature increases the conductivity of

Question # 10

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

Question # 11

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 # 12

The resistance of a conductor does not depend on its

Question # 13

Ohm established a relation between

Question # 14

The charge carriers in electrolyte are positive and negative

Question # 15

An alpha particle is accelerated through a potential difference of 106volt. Its kinetic energy will be

Question # 16

The unit of resistivity is

Question # 17

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 # 18

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

Question # 19

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

Question # 20

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 # 21

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

Question # 22

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

Question # 23

The capacitance of a parallel plate capacitor depends upon

Question # 24

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 # 25

A proton is about 1840 times heavier than an electron. When it is accelerated by a potential difference of 1 KV, its kinetic energy will be

Question # 26

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

Question # 27

Free electrons are

Question # 28

The capacity of a parallel plat capacitor depends on the

Question # 29

Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is

Question # 30

The electric flux from a closed surface

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 The electric field due to an infinite long thin wire at a distance R varies as
A. 1/R
B. 1/R2
C. R
D. R2
2 At ordinary temperature, an increase in temperature increases the conductivity of
A. Conductor
B. Semiconductor
C. Insulator
D. Alloy
3 Resistance of a conductor is increased, the currant will
A. Decrease
B. Increase
C. Remain the same
D. None of these
4 The capacity of a parallel plat capacitor depends on the
A. Type to metal used
B. Thickness of plates
C. Potential applied across the plates
D. Separation between the plates
5 Electron volt is the unit of.
A. Potential difference
B. Energy
C. Resistance
D. Capacitance
6 106electrons are moving through a wire per second, the current developed is
A. 1.6 x 10-19
B. 1 A
C. 1.6 x 10-15 A
D. 106A
7 Which of the following does not obey ohm's law?
A. Copper
B. Al
C. Diode
D. None
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 The material in the form of wire or rod or plate which leads the current into or cut of the electrolyte is known as
A. voltmeters
B. resistance
C. electrode
D. current
10 One moving a charge of 20 coulombs by 2 cm, 2 J of work is done, then the potential difference between the points is
A. 0.1 V
B. 8 V
C. 2 V
D. 0.5 V

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