PHYSICS 2nd Year MCQs Chapter No.4 ELECTROMAGNETIC INDUCTION Test No.1

Physics MCQs 2nd Year Chapter No.4 ELECTROMAGNETIC INDUCTION 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 : ELECTROMAGNETIC INDUCTION
Chapter No. 4  [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. 4 (Test No. 1)
Chapter Name : ELECTROMAGNETIC INDUCTION 
Total MCQ from Text Book :  89
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 : 89
Total Time :   89 minutes




34

GRADE 12 - PHYSICS CHAPTER NO.4 ELECTROMAGNETIC INDUCTION Test No.1

GRADE 12 - PHYSICS CHAPTER NO.4 ELECTROMAGNETIC INDUCTION Test No.1

1 / 89

The direction of the induced current in a certain coil can easily be found by using

2 / 89

The, phenomenon of induced emf was observed by Faraday and Henry in

3 / 89

The mutual inductance of two coils is given by the relation

4 / 89

The self inductance of the coil depends upon

5 / 89

If the length of a conductor placed parallel to magnetic field is doubled, the induced emf

6 / 89

In alternating current, inductors behaves like

7 / 89

The only difference between construction of D.C. generator and an A.C. generator is that of

8 / 89

The phenomena by which an induced emf is produced due to change of flux is called

9 / 89

Faraday's law is based upon law of conservation of

10 / 89

The emf induced by the motion of a conductor across a magnetic field is called

11 / 89

The most common source of an A.C. voltage is

12 / 89

The motional emf in a conductor can be increased by

13 / 89

The coil used to obtain the output by mutual induction phenomenon is known as

14 / 89

The number of coils wound around an iron cylinder and rotated in magnetic field is called

15 / 89

If N is the number of turns in a coil, the value of self-inductance varies as

16 / 89

A device which converts mechanical energy into electrical energy is called

17 / 89

SI unit of mutual inductance is

18 / 89

If a conductor is placed perpendicular to a magnetic field B is then motional emf will be

19 / 89

In case of alternating current, the average value of current and voltage is

20 / 89

If the coil is wound on an iron core, the flux through it will

21 / 89

In motional emf experiment when the system reaches an equilibrium state

22 / 89

A generator running in reverse may be called as

23 / 89

Commutator was invented by

24 / 89

A motor of zero back emf draws ---- current

25 / 89

If the plane of A.C. generator coil is parallel to the field, then emf induced or current in coil is

26 / 89

The value, of the induced emf in a loop of wire is directly proportional to the rate of change of ------ through the loop

27 / 89

Mutual inductance has a practical role in the performance of the

28 / 89

1 VsA-1 =

29 / 89

The back emf of a motor can be expressed as

30 / 89

It is the converse process of magnetic effect of current

31 / 89

The self-inductance of the coil is given by

32 / 89

Faraday law is given by

33 / 89

Which one of the following expressions for mutual inductance is correct

34 / 89

One henry is equal to

35 / 89

Self inductance (L) of a coil is

36 / 89

Commutator was invented in

37 / 89

Energy stored per unit volume inside the solenoid is called

38 / 89

The device in the circuit that consumes electrical energy is called

39 / 89

Alternating emf is produced by rotating a rectangular coil of wire in

40 / 89

The energy stored in an inductor is given by

41 / 89

The current flowing through a coil due to induced emf hi it depends upon

42 / 89

Motional emf does not depend upon

43 / 89

The working of electric motor is reversed of

44 / 89

When a motor is over loaded; then the magnitude of back emf

45 / 89

The induced emf in a motor which opposes the applied emf running the motor is called

46 / 89

Lenz's law deals directly with the

47 / 89

An inductor may store energy in

48 / 89

Alternating current generator uses

49 / 89

If a steady current is passing though a coil then the self induced emf in it will be

50 / 89

The working of A.C. generator is based upon the phenomenon of

51 / 89

The phenomenon in which changing current in a coil induces an emf in itself is called

52 / 89

weber / ampere is the 'unit of

53 / 89

The SI unit of self-inductance is

54 / 89

The ratio of average emf in the coil to the time rate of change of current in the same coil is called

55 / 89

The component mainly used in a D.C. generator is

56 / 89

The fluctuations of the output of generator can be reduced by

57 / 89

An induced emf is produced in a circuit when

58 / 89

The fact that emf produced by motion of a coil across a magnetic field was discovered by

59 / 89

In mutual induction, the coil placed with source of electric energy is called

60 / 89

The induced emf lasts so long as the magnetic flux keeps

61 / 89

Back motor effect in generators is in accordance with law of conservation of

62 / 89

If a conductor of length 1 m is moved with velocity V across a magnetic field B at an angle of 30° with B ,then motional emf will be

63 / 89

In self induction phenomenon, the total flux through the coil is directly proportional to the ----- through the coil

64 / 89

△Φ/△t has the same unit as that of

65 / 89

The maximum emf produced by an alternating generator is

66 / 89

Current can be induced in a coil by changing the area of the coil in a

67 / 89

If the number of turns and the length of an inductor is doubled, then inductance(L) becomes

68 / 89

The inductance in a coil plays the same role in AC circuits as in ----- play in mechanics

69 / 89

The mutual inductance of coils depends upon

70 / 89

The emf induced in the coil of A.C. generator will be maximum when the angle between the plane of coil and the magnetic field is

71 / 89

The amount of torque in D.C. motors, depends upon

72 / 89

When current flows through the armature coil, the force on the conductor produces

73 / 89

The mathematical expression for self-inductance of coil is given by

74 / 89

The induced emf in a rotating coil of A.C. generator varies with time

75 / 89

The self inductance of a coil ---- when a soft iron is placed into it

76 / 89

The device which is used to increase or decrease the value of alternating voltage is called

77 / 89

Lenz's law is in accordance With the law Of conservation of

78 / 89

The motional emf of a conductor of length L and moving perpendicular to a magnetic field B is equal to

79 / 89

A motor is a device which converts electrical energy into

80 / 89

In D.C. generator, output of every coil is tapped only as it reaches its

81 / 89

A metallic ring is attached to wall of a room When the north pole of bar magnet is brought near the ring, the induced current in the ring is

82 / 89

Induced current always acts to ------- the magnetic flux through the circuit

83 / 89

If the plane of A.C. generator coil is perpendicular to the field, then emf induced or current in coil is

84 / 89

When motor is started, the back emf is

85 / 89

When a motor car is started its head light first becomes slight dim because the voltage across the lamp

86 / 89

The ratio Of the emf induced in the secondary coil to the rate of change of current in the primary coil is known as

87 / 89

If back emf in a motor decreases, then it will draw

88 / 89

The principle of an electric generator is based on

89 / 89

A.C current reverses its direction

Your score is

The average score is 49%

0%



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