12th Class PHYSICS MCQs CHAPTER NO.3 ELECTROMAGNETISM Test No.1

Physics MCQs 2nd Year Chapter No. 3 ELECTROMAGNETISM Test No. 1, FSc, Grade 12, Second Year Multiple Choice Questions, Medical College ( MDCAT ) , ECAT & University Admission Entry Test Exams Online Preparation, Chapter Wise Questions Answers Quiz Notes in Pdf Download, All Old Board Papers included, All Queries reply within 24 Hours. Click here to Contact us for any Query/Question regarding Exams.

PHYSICS – 2nd Year
Chapter Name : ELECTROMAGNETISM
Chapter No. 3 / 14  [ Test No.1 ]
Multiple Choice Questions
Note : All MCQ’s selected in this test are from OLD F.Sc. board , UHS and PMC(Pakistan Medical Commission) Islamabad Papers.
 








Book Name :  PHYSICS
Chapter No.  3 / 14 (Test No. 1)
Chapter Name : ELECTROMAGNETISM 
Total MCQ from Text Book :  96
Book Version  :
2022

Published By : Punjab Text Book Board Lahore
Approved By : Govt of the Punjab and Federal Ministry for Education
Test Type : MCQ’s
Exam conduct By : Inter Boards of Sindh, KPK, Balochistan, AJK, Gilgit Baltistan, Punjab & Federal
Class / Grade  : 12 ( F.Sc. Intermediate)
Total Marks : 96
Total Time :   96 minutes




56

GRADE 12 - PHYSICS CHAPTER NO.3 ELECTROMAGNETISM Test No.1

GRADE 12 - PHYSICS CHAPTER NO.3 ELECTROMAGNETISM Test No.1

1 / 96

A galvanometer is converted into an ammeter by connecting a suitable

2 / 96

In SI units, the value of permeability of free space (μ) is

3 / 96

The current passing through coil of the galvanometer is

4 / 96

The waveform produced by sweep or time base generator in CRO is

5 / 96

Which one of the following field is suitable choice for circular trajector of a charged partical

6 / 96

The grid in CRO

7 / 96

The SI units of magnetic permeability is

8 / 96

Magnetic flux will be maximum when

9 / 96

In a galvanometer, the enameled copper wire is wound on

10 / 96

Magnetic flux will be minimum when

11 / 96

Which of the following particle moving in the magnetic field cannot be deflected

12 / 96

Charge to mass ratio (e/m) of a proton is_________ that of electron

13 / 96

In CRO when cathode is .heated by a filament, it emits

14 / 96

Magnetic field inside a long solenoid is

15 / 96

The working of galvanometer depends upon torque on a current carrying coil in

16 / 96

If the current passing through a wire in a magnetic field is halved the magnetic force would become

17 / 96

When charged particle enters perpendicular in magnetic field, it moves in

18 / 96

A charge projected in the direction of magnetic field experiences

19 / 96

When the coil of the galvanometer is in equilibrium; then the deflecting couple is

20 / 96

The magnetic field in a certain region is given by (B) = (40i^)-(18j^). How much flux passes a 5.0 cm2 area loop in this region if the loop lies hate in the xy-plane

21 / 96

When charged particle is projected perpendicular to a uniform magnetic field its trajectors is

22 / 96

In galvanometer the coil is situated in the magnetic field such that the plane of the coil is always

23 / 96

When a current carrying conductor is placed in a uniform magnetic field, it experience a force which is given by

24 / 96

Magnetic flux per unit area perpendicular to magnetic field is called

25 / 96

The relation between current I and the angle of deflection in a moving coil galvanometer is:

26 / 96

A device used for the detection of current is called

27 / 96

One tesla is equal to

28 / 96

The magnetic field at a point due to a current carrying conductor is directly proportional to

29 / 96

In a straight current carrying conductor, the direction of magnetic field can be found by

30 / 96

In a moving coil galvanometer, the deflecting. Torque depends upon

31 / 96

An ideal ammeter has ________resistance

32 / 96

Charge to mass ratio of neutron is__________ that of electron

33 / 96

The e/m of an electron moving in a circular path in a magnetic field is given by

34 / 96

The working of all electrical instruments depends upon

35 / 96

A long tightly wound cylindrical coil of wire is called

36 / 96

When an electron enters in a magnetic field, right angle to its motion. then the magnitude of velocity will be

37 / 96

The magnetic force experienced by a charge particle is zero, when charge particle is projected at

38 / 96

Sensitivity of galvanometer is given by

39 / 96

The direction of lines of force depends upon the direction of

40 / 96

In galvanometer the rectangular coil is made up of

41 / 96

The sensitivity of a moving coil galvanometer can be, increased by

42 / 96

When a charged particle moves through a magnetic field, the effect of the field, changes the particle's

43 / 96

Minimum current required to produce a deflection of one mm on a scale at a distance of 1 meter is

44 / 96

The magnitude of the deflecting torque on a current carrying coil in

45 / 96

A current carrying conductor experiences maximum magnetic force in a uniform magnetic field when it-is placed

46 / 96

In CRO the grid is at _______potential with respect to cathode

47 / 96

In e/m experiment, the path of the electron can be made visible by filling glass tube with

48 / 96

The force experienced by a single charge carrier moving with velocity V in a magnetic field of strength B is given by

49 / 96

A 0.50 T field over an area of 2 (m2) which lies at an angle of 30° to the field, the magnetic flux is

50 / 96

Lorentz force is given by

51 / 96

Two parallel straight wires carrying currents in same direction

52 / 96

Sensitivity of Galvanometer can he increased by increasing

53 / 96

In CRO, beam of electrons is focused by

54 / 96

Magnetic flux density due to current carrying conductor can be determined by

55 / 96

The Working of a galvanometer depends upon

56 / 96

The SI unit of magnetic induction is

57 / 96

The brightness of the spot On CRO screen is controlled by

58 / 96

Total number of lines of magnetic induction passing through any surface placed perpendicular to the field is called:

59 / 96

If current is passing through a wire, lines of force near it are

60 / 96

One tesla is equal to

61 / 96

Ampere's law can be used to calculate the_______field

62 / 96

In western type galvanometer, the jeweled bearings are used produced

63 / 96

The electron, gun in CRO consists of

64 / 96

Magnetic force performs

65 / 96

The force Experienced by a charge particle is maximum if it moves

66 / 96

In galvanometer, the restoring couple of the suspension wire is proportional to the angle of deflection as long as the wire obeys

67 / 96

The beam of electrons in CRO is deflected when they pass through uniform

68 / 96

Torque necessary to produce unit twist is called

69 / 96

CRO when beam of electrons falls on screen; it makes a visible spot because the screen is

70 / 96

The galvanometer in which the coil comes to rest quickly after the current passed through it, is called

71 / 96

In CRO the x-plates deflect the beam of electrons _________ on screen

72 / 96

The magnetic force is simply a

73 / 96

Cathode ray oscilloscope works by deflecting beam of

74 / 96

Ammeter is a

75 / 96

The magnetic force experienced by a chai.ge particle is maximum, when charge particle is projected at

76 / 96

When current passes through a solenoid coil, it behaves like a

77 / 96

CRO is used for displaying the wave form of a given

78 / 96

The magnetic field outside the solenoid due to current is

79 / 96

An ammeter only can be used in________ in a circuit

80 / 96

In velocity selector a charged particle will go undeflecting if V is equal to

81 / 96

A current carrying wire is surround by

82 / 96

A 5 meter wire carrying a current of 2 A is at right angles to the uniform magnetic field of 0.5 weber/(m2 The force on the wire is

83 / 96

Which of the, following is most suitable for the core of an electromagnet?

84 / 96

A magnetic field is always set up due to

85 / 96

Two parallel straight wires carrying currents in opposite direction

86 / 96

The magnetic effect near the current carrying conductor was discovered by

87 / 96

If an electron enters the perpendicular magnetic field with a velocity v it will experience a force which is given by F=

88 / 96

The galvanometer can be made sensitive if the value of the factor BAN/C is

89 / 96

The unit of magnetic flux is

90 / 96

A high speed graph plotting device is

91 / 96

When an electron enters in a perpendicular magnetic field of its motion. then direction of its motion

92 / 96

SI unit of magnetic flux is

93 / 96

The e/m of an electron can be expressed as

94 / 96

The mathematical expression Σ [(B). (l)] = (µ0I) is known as

95 / 96

The current passing through a coil of galvanometer is given by

96 / 96

Magnetic field along the axis of a solenoid with N turns carrying a current I is given by

Your score is

The average score is 38%

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