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

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 # 2

A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?

Question # 3

Three resistance 500,500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be

Question # 4

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

Question # 5

Electron volt is the unit of

Question # 6

What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts?

Question # 7

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

Question # 8

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 # 9

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

Question # 10

An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be

Question # 11

At any point on the right bisector of the line joining two equal and opposite charges

Question # 12

The electric lines of force are

Question # 13

A 10 F capacitor is charged to a potential difference of 50 V and is connected to another uncharged capacitor in parallel. Now the common potential difference becomes 20 volt.The capacitance of second capacitor is

Question # 14

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

Question # 15

The relation V = IR represents

Question # 16

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 # 17

The resistance of an incandescent lamp is

Question # 18

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

Question # 19

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 # 20

Resistance of a conductor depends upon

Question # 21

The capacity of a parallel plat capacitor depends on the

Question # 22

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

Question # 23

A point charge A of charge +4μC and another B of charge -1μC are placed in air at a distance 1 m apart. Then the distance of the point on the line joining the charge B, where the resultant electric field is zero, is (in m)

Question # 24

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 # 25

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 # 26

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

Question # 27

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

Question # 28

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 # 29

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

Question # 30

An electric dipole is at the centre of a hollow sphere of radius r. The total normal electric flux through the sphere is (here Q is the charge and d is the distance between the two charges of the dipole)

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
  • C
    Ch Ubaid Ullah 06 - Mar - 2026 17 Min 40 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

ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is
A. Charge Q
B. Potential V
C. Capacity
D. Energy U
2 Free electrons are
A. tightly bound
B. fixed
C. loosely bound
D. tightly fixed
3 If the length of the conductor is double and its cross sectional area is halved, its conductance will
A. Increase four fold
B. Become one-fourth
C. Become one-half
D. Remains unchanged
4 Physicist George Simon ohm was a
A. German physical
B. French physicist
C. Chinese physicist
D. Russian physicist
5 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
6 The fractional change in resistance per kelvin is known as
A. temperature coefficient
B. resistance coefficient
C. super temperature
D. critical temperature
7 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
8 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
A. 2 R
B. R/4
C. R/2
D. R
9 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
10 Which one of the following causes production of heat when current is set up in a wire?
A. Fall of electrons from higher orbits to lower orbits
B. Inter-atomic collisions
C. Inter-electron collisions
D. Collisions of conduction electron with atoms

Test Questions

Is this page helpful?