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




90

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

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

1 / 96

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

2 / 96

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

3 / 96

The SI unit of magnetic induction is

4 / 96

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

5 / 96

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

6 / 96

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

7 / 96

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

8 / 96

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

9 / 96

The current passing through coil of the galvanometer is

10 / 96

Magnetic force performs

11 / 96

Magnetic field inside a long solenoid is

12 / 96

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

13 / 96

A charge projected in the direction of magnetic field experiences

14 / 96

Two parallel straight wires carrying currents in same direction

15 / 96

The grid in CRO

16 / 96

The magnetic force is simply a

17 / 96

In western type galvanometer, the jeweled bearings are used produced

18 / 96

Sensitivity of galvanometer is given by

19 / 96

SI unit of magnetic flux is

20 / 96

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

21 / 96

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

22 / 96

The e/m of an electron can be expressed as

23 / 96

Lorentz force is given by

24 / 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

25 / 96

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

26 / 96

A high speed graph plotting device is

27 / 96

CRO is used for displaying the wave form of a given

28 / 96

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

29 / 96

A galvanometer is converted into an ammeter by connecting a suitable

30 / 96

Ammeter is a

31 / 96

A magnetic field is always set up due to

32 / 96

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

33 / 96

The magnetic field outside the solenoid due to current is

34 / 96

The electron, gun in CRO consists of

35 / 96

Torque necessary to produce unit twist is called

36 / 96

Magnetic flux will be minimum when

37 / 96

The unit of magnetic flux is

38 / 96

In CRO the grid is at _______potential with respect to cathode

39 / 96

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

40 / 96

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

41 / 96

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

42 / 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

43 / 96

Magnetic flux per unit area perpendicular to magnetic field is called

44 / 96

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

45 / 96

An ammeter only can be used in________ in a circuit

46 / 96

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

47 / 96

The direction of lines of force depends upon the direction of

48 / 96

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

49 / 96

The magnetic effect near the current carrying conductor was discovered by

50 / 96

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

51 / 96

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

52 / 96

Two parallel straight wires carrying currents in opposite direction

53 / 96

In galvanometer the rectangular coil is made up of

54 / 96

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

55 / 96

A device used for the detection of current is called

56 / 96

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

57 / 96

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

58 / 96

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

59 / 96

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

60 / 96

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

61 / 96

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

62 / 96

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

63 / 96

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

64 / 96

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

65 / 96

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

66 / 96

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

67 / 96

Cathode ray oscilloscope works by deflecting beam of

68 / 96

Magnetic flux will be maximum when

69 / 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

70 / 96

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

71 / 96

The SI units of magnetic permeability is

72 / 96

Charge to mass ratio of neutron is__________ that of electron

73 / 96

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

74 / 96

A long tightly wound cylindrical coil of wire is called

75 / 96

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

76 / 96

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

77 / 96

Sensitivity of Galvanometer can he increased by increasing

78 / 96

In CRO, beam of electrons is focused by

79 / 96

The working of all electrical instruments depends upon

80 / 96

The current passing through a coil of galvanometer is given by

81 / 96

One tesla is equal to

82 / 96

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

83 / 96

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

84 / 96

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

85 / 96

The brightness of the spot On CRO screen is controlled by

86 / 96

The Working of a galvanometer depends upon

87 / 96

An ideal ammeter has ________resistance

88 / 96

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

89 / 96

In a galvanometer, the enameled copper wire is wound on

90 / 96

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

91 / 96

One tesla is equal to

92 / 96

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

93 / 96

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

94 / 96

A current carrying wire is surround by

95 / 96

Ampere's law can be used to calculate the_______field

96 / 96

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

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