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

  • Total Questions30

  • Time Allowed30

Start Test Download PDF

Physics ECAT Pre Engineering Chapter 12 Electrostatics

00:00
Question # 1

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 # 2

If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be

Question # 3

The unit of conductance is

Question # 4

Current provided by a battery is maximum when

Question # 5

The force of repulsion between two point charges is F, when these are at a distance 0.1 m apart. Now the point charges are replaced by sphere of radii 5 cm each having the same charge as that of the respective point charges. The distance between their centre is again kept 0.1 m ; then the force of repulsion will

Question # 6

Specific resistance of a wire depends upon

Question # 7

Equal charges are given to two spheres of different radii. The potential will

Question # 8

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

Question # 9

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

Question # 10

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 # 11

In a building, there are 15 bulbs of 40 watts, 5 bulbs of 100 watts, 5 fans of 80 watts and a heater of 1 kilowatt. The voltage of the electric main is 220 volts. The minimum efficiency of the main fuse of the building will be

Question # 12

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

Question # 13

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 # 14

Resistance of a conductor depends upon

Question # 15

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 # 16

When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to

Question # 17

106electrons are moving through a wire per second, the current developed is

Question # 18

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

Question # 19

The excess (equal in number) of electrons that must be placed on each of two small spheres spaced 3 cm apart, with force of repulsion between the spheres to be 10-19N, is

Question # 20

The graphical representation of ohm's law is

Question # 21

Cause of heat production in a current carrying conductor is

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 electric intensity outside the two oppositely charged parallel metal plates is

Question # 24

The relation between the charge Q of a parallel plate capacitor and the P.D between its plates is

Question # 25

The value of electrical constant of proportionality k is

Question # 26

A uniform resistance wire of Length L and diameter d has a resistance R. Another wire of same material has length, 4L and diameter 2d, the resistance will be

Question # 27

In Pakistan electricity is supplied for domestic use at 220 V, it is supplied at 110 V in USA. If the resistance of a 60 W bulb for use in Pakistan is R, the resistance of a 60 W bulb for use in USA will be

Question # 28

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

Question # 29

The electric field will be uniform

Question # 30

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

Submit

Prepare Complete Set Wise Physics ECAT Pre Engineering Chapter 12 Electrostatics MCQs Online With Answers


Topic Test

00:00
Submit

Top Scorers Of Physics ECAT Pre Engineering Chapter 12 Electrostatics MCQ`s Test

  • M
    Mehreen Ather 02 - Dec - 2024 30 Min 19 Sec 90/120
  • S
    Salvaa Sheikh 13 - Sep - 2024 24 Min 16 Sec 85/120
  • S
    Sualeh Murtaza 15 - Nov - 2024 05 Min 29 Sec 80/120
  • N
    Nitalaya Hassan 23 - Dec - 2024 06 Min 15 Sec 80/120
  • F
    Fatima Anis 26 - Dec - 2024 13 Min 35 Sec 80/120
  • A
    Abdullah Zubair 25 - Dec - 2024 14 Min 30 Sec 80/120
  • H
    Hanook Masih 25 - Sep - 2024 12 Min 15 Sec 75/120
  • U
    usman gujjar 02 - Dec - 2024 07 Min 03 Sec 70/120
  • H
    hussain naqvi 19 - Sep - 2024 18 Min 43 Sec 65/120
  • H
    Humera Noor 27 - Dec - 2024 19 Min 28 Sec 65/120
  • S
    suzi 10 - Feb - 2026 08 Min 22 Sec 64/120
  • Z
    Zaka Ullah 09 - Nov - 2024 07 Min 20 Sec 60/120
  • A
    Abdulrehman Haroon 26 - Sep - 2024 28 Min 20 Sec 60/120
  • 1
    123 Abcd 07 - Nov - 2024 12 Min 46 Sec 55/120
  • A
    Abdul rafay Malghani 02 - Dec - 2024 14 Min 25 Sec 55/120

ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 Three resistance 500,500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be
A. 0.52 A
B. 1 mA
C. 0.7 mA
D. 1.4 A
2 In bringing an electron towards another electron, electrostatic potential energy of system
A. Decreases
B. Increases
C. Remains uncharged
D. Becomes zero
3 Two electric bulbs of 200 W and 100 W have same voltage. If R1and R2be their resistance respectively then
A. R1= 2R2
B. R2= 2R1
C. R2 = 4R1
D. R1= 4R2
4 The fractional change in resistance per kelvin is known as
A. temperature coefficient
B. resistance coefficient
C. super temperature
D. critical temperature
5 The concept of field theory was put forward by
A. Franklin
B. Kepler
C. Oersted
D. Michael Faraday
6 For two resistance wires joined in parallel, the resultant resistance is 6/5 ohm. When one of the resistance wire breaks, the effective resistance becomes 2 ohm. The resistance of the broken wire is
A. 3/5 ohm
B. 2 ohm
C. 6/5 ohm
D. 3 ohm
7 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?
A. Zero
B. 5μC m-2
C. 20μC m-2
D. 8μC m-2
8 One joule is equal to
A. 1.6 x 1019eV
B. 6.25 x 1018eV
C. 1.6 x 1818eV
D. 6.25 x 1019eV
9 Three resistors of resistance R each are combined in various ways. Which of the following cannot be obtained?
A. 3RΩ
B. 2R/4Ω
C. R/3Ω
D. 2R/3Ω
10 The earth's potential is taken as
A. Negative
B. Positive
C. Zero
D. Infinite

Test Questions

Is this page helpful?