Physics MCQs 2nd Year Chapter No.4 ELECTROMAGNETIC INDUCTION Test No. 2, 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 No. 4  [Test No.2]
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. 2 )
Total MCQ from Text Book :  89
Book Version  :

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  : 12th ( F.Sc. Intermediate)
Total Marks : 89
Total Time :   89 minutes




1 / 89

The self inductance of solenoid is

2 / 89

A changing electric flux creates

3 / 89

Which one is not present in A.C generator?

4 / 89

The winding of the electromagnet in motor are usually called

5 / 89

The energy stored in an inductor is given as

6 / 89

In case of inductor, energy is stored in the

7 / 89

When motor is just started, back emf is almost

8 / 89

Energy density of an inductor is

9 / 89

A conducting rod of length l falling with velocity V perpendicular to magnetic field B. Which of the following is potential difference between two ends

10 / 89

Turns ratio (r) for a step down transformer is

11 / 89

Electricity can be transmitted overlong distances by

12 / 89

Commutator's are used in

13 / 89

If the magnetic flux linked with a coil varies at the rate of 1Wb/min. Then induced emf will be

14 / 89

A step up transformer is used 120 v line to provide 240 v. If primary coil has 100 turns. The number of turns in secondary is

15 / 89

The loss of energy over an A.C. cycle during the magnetization and demagnetization of transformer core is usually called

16 / 89

The core of transformer is-made of

17 / 89

Henry is SI unit of

18 / 89

In step down transformer

19 / 89

A solenoid of length / meter has self-inductance L henry. If the number of turns are doubled, its self-inductance

20 / 89

Which of the following are the power losses in a transformer?

21 / 89

The current passing through a choke coil of 5H is decreasing at the rate of 2A/s Which of the following is the emf developed across the coil?

22 / 89

Unit of self Inductance is

23 / 89

The devices in the circuit that consume electrical energy are known as

24 / 89

If the motor is overloaded, the magnitude of back emf

25 / 89

By placing soft iron inside a coil

26 / 89

If the motor is overloaded then magnitude of back emf

27 / 89

The number of turns in a coil is increased from 10 to 100. Its self-inductance becomes

28 / 89

Transformer makes possible the

29 / 89

Self inductance does not depend upon

30 / 89

Commentator was invented in

31 / 89

SI unit of mutual inductance is

32 / 89

The motional emf is given by

33 / 89

Which of the following quantity decreases in a step-up transformer?

34 / 89

Self induced emf is sometimes called as

35 / 89

A transformer is used to step up or step down

36 / 89

Eddy currents is one cause of energy loss, in

37 / 89

The angular speed of rotation of the coil of A.C generator is doubled. Then induced emf will be

38 / 89

A transformer

39 / 89

The self-inductance of a coil is 5H. The current changes from 1A to 2A in 5 second through the coil. Which of the following is the value of induced emf produced in the coil?

40 / 89

The turn ratio of a step-up transformer is 4:1. If the current of 4A is passing through the primary coil. Then current in secondary coil will be

41 / 89

In electromagnetic induction the induced emf is independent of

42 / 89

When a motor is over loaded, then the magnetic of back emf

43 / 89

B2/µo is the expression of

44 / 89

A real transformer does not change

45 / 89

The SI unit of magnetic induction is

46 / 89

SI unit of self inductance is Henry which is

47 / 89

Lenz's law is in accordance with the Law of Conservation of

48 / 89

When the back emf in a circuit is zero, it draws

49 / 89

The mutual induction plays role in

50 / 89

The mutual inductance of a pair of coils each of N turns, is M henry. If a current of I ampere in one of the coil is brought to zero in t seconds, The average induced emf in other coil, in volt, will be

51 / 89

The mutual Inductance between two coils depends upon their

52 / 89

The induced currents setup in the core of transformer in a direction perpendicular to the flux are known as

53 / 89

The turn ratio of a transformer is 10. It means that

54 / 89

In transformer works on the principle of

55 / 89

The rod of unit length is moving at 30° through a magnetic field of 1 T. If velocity of rod is 1 m/s, then induced emf in the rod will be given by

56 / 89

Efficiency of transformer is not affected by

57 / 89

SI unit of self inductance is Henry which is

58 / 89

When the motor is just started, back emf is

59 / 89

A device which converts low voltage or current to high voltage or current is called

60 / 89

Energy stores in an inductor is given by

61 / 89

The core of dynamo is laminated because

62 / 89

The Lenz's Law fulfills

63 / 89

Lenz's law is in accordance with law of conservation of

64 / 89

Which of the following quantity remain unchanged in a transformer?

65 / 89

Transformer is used to change

66 / 89

Transformer for domestic use step down the voltage to

67 / 89

The main causes of power losses in a transformer are

68 / 89

Induction furnace based upon the concern of

69 / 89

The turns ratio of a transformer is 10 it means that

70 / 89

A coil having number of turns N and cross sectional area A is rotated in a uniform magnetic field B with an angular velocity w. Which of the following is the maximum induced emf in it?

71 / 89

With the speed of motor, magnitude of black emf

72 / 89

The working principle of transformer is

73 / 89

In transformer which one of the following does not change

74 / 89

For on ideal Transformer

75 / 89

Mutual Induction has a practical role in the performance of the

76 / 89

The self-induction is given by

77 / 89

Energy density in inductor is given by

78 / 89

Lenz's law deals with

79 / 89

Commutator was invented by

80 / 89

An increase in number of turns of a coil result in

81 / 89

The reactance of an Inductor at 50 Hz is 100 its reactance at 100 Hz becomes

82 / 89

In a step up transformer the turn ratio of primary and secondary coil is 1:2. A cell of 1.5V is connected across the primary coil which of the following will be voltage of secondary coil?

83 / 89

Lenz's law is in accordance with the Law of Conservation of

84 / 89

Lenz's law is in accordance with the Law of Conservation of

85 / 89

If L and R denotes inductance and resistance then dimensional formula for L/R is

86 / 89

In step up transformer

87 / 89

Which one of the following is not present in an A.C generator

88 / 89

The equation for energy density is given as

89 / 89

If the speed of rotation of a generator is doubled the output voltage will be

Your score is

The average score is 57%


All Candidates / Students which completed F.Sc. (Pre-Medical or Pre-Engineering Exams) with Excellent Score and seeking for Preparation of Any Exams for Job Test or Entrance Test in Medical or Engineering Universities and Colleges, They Will find the Sample Papers , Sample Test on this page. All Preparation Material for PMC (Pakistan Medical Commission), ECAT (Engineering College Admission Test) or For MDCAT (Medical and Dental College Admission Test are free of Cost. All Students will able to download or allow to save in Pdf format or E Book. The Study Material from F.Sc. Textbooks. These Online Quiz in form of Question Answers. We try to present the Multiple Choice Questions in Best form and Chosen from Past Board and MDCAT old Papers.  We make a best selection of MCQs (Multiple Choice Questions) with Questions and Answers for Admission Test on our website. All These MCQs are authentic and taking after our Verification of our Audit Teams from different areas of the World. These Thousands of MCQs cover different Topics on PHYSICS Part-2. These MCQs are best for Second Year Students. If they feel than they inform to other 12th Class Students to help them. All These MCQs (Multiple Choice Questions) are Chapter wise and downloadable in pdf format. In this Chapter we cover the Quiz/Exams about PHYSICS 2nd  Year Chapter No. 3 Test No.2 ELECTROMAGNETISM.

2nd Year PHYSICS notes and MCQs are according to latest Paper Pattern of Punjab Boards, All Exercises in Textbooks are solved to ensure the Quality Education to Medical College Students. All MCQs are according to UHS (University of Health Sciences) Lahore approved Syllabus.

Job Seeking Candidates use for CSS (Central Superior Service) , FPSC (Federal Public Service Commission Islamabad) , PPSC (Punjab Public Service Commission) , SPSC(Sindh Federal Public Service Commission) , KPPSC(Khyber-Pakhtunkhwa Public Service Commission) , BPSC ( Balochistan Public Service Commission) , UPSC (Union Public Service Commission) , PCS (Punjab Civil Services Exam) , IBPS (The Institute of Banking Personnel Selection) , UPPSC(UTTAR PRADESH PUBLIC SERVICE COMMISSION PRAYAGRAJ ) ,

In India IAS exam (officially known as the Civil Services Examination) is organized and conducted by the Union Public Service Commission (UPSC)

These PHYSICS 1ST YEAR MCQs are best for different departments like Railway, Banking , Education (Schools and Colleges),Electricity(WAPDA) or in any Private Industry.

Explanation and Solution of all past papers in this online Practice Test with Examples leads the Candidates towards Success in Interviews

Dear Student If you feel any error in any MCQ then contact us on this Email : 786times.com@gmail.com (administrator) OR Write in Comments….


  • Simple and easiest way to display MCQs.
  •  On refresh website page,each question and Answer shuffle in MCQs.
  • Time Limit is display for each test.
  • No login and password required for test.
  • Each query entertained online via email or WhatsApp.
  • Score card Display.
  • Correct answer display at end of each question(if you wrong answered).
  • Complete list of Question numbers in cells(blocks) e.g. 1, 2 , 3 ….
  • Red cells show your wrong answers.
  • Green cells shows correct Answers.
  • Your obtained RESULT Percentage show after each Questions.
  • Use your computer LAB & Internet to increase ability of STUDENTS.
  • Mobile Friendly

Go to Previous Page for Choose Chapter