Physics Class 12 Chapter 15 Important Questions

Learn Physics Class 12 Chapter 15 Important Questions. These important physics Class 12 mcqs, short and long questions are collected by going through different past papers of all Punjab Board Pakistan.

Why are these questions important?

These Questions are taken from past papers of Physics Class 12. These questions are top repeated of in previous papers of Physics Class 12 of all Punjab boards as;

      Bahawalpur Board

      D.G.Khan Board

      Faisalabad Board

      Gujranwala Board

      Lahore Board

      Multan Board

      Rawalpindi Board

Content is created and designed with intense care and diligence. Here is only the most important MCQ, short questions and long questions of Physics Class 12 chapter 15 Electromagnetic Induction.

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You can easily download in pdf format or view Physics Class 12 mcqs, short questions and long questions  online. You can easily print these files in simple way. Here you find Physics Class 12 Chapter 15 Electromagnetic Induction important mcqs, short and long questions. By Preparing these important questions, you will achieve splendid marks in Physics Class 12. This content is very helpful for weak students and also helpful for those students that are better at Physics Class 12 exam preparation. These Questions are based on the current Physics Class 12 syllabus according to Punjab Textbook Board.

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About This Chapter

Physics Class 12 Chapter 15 Electromagnetic Induction enables the students to learn Induced EMF and Induced Current, Induced EMF and Induced Current, Faradays Law and Induced EMF and Lenz Law and Direction of Induced EMF. Students learn Mutual Induction and Self Induction. Students learn Energy Stored in an Inductor, Alternating Current Generator and D.C. Generator. Students learn Back Motor Effect in Generators. Students learn about D.C. Motor and Back EMF Effect in Motors. Students learn Transformer Principle, structure and working. This Post "Physics Class 12 Chapter 15 Important Questions" covers all important mcqs, short and long questions related to important  topics of this chapter.

👉Imp MCQs - Physics Class 12 CH # 15

1. The direction of induced current is always so as to oppose the change which causes the current is:

(A) Ohm's law

(B) Faraday's law

(C) Lenz's law

(D) None of these

(C) Lenz's law

2. Energy stored per unit volume in magnetic field is called:

(A) Energy Density

(B) Density

(C) Work

(D) Magnetic Flux

(A) Energy Density

3. Mutual induction has a practical role in the performance of :   

(A) AC generator 

(B) Transformer

(C) DC motor

(D) DC generator

(B) Transformer

4. Self induced emf is sometimes called as:
    

(A) Constant emf

(B) Variable emf

(C) Back emf

(D) None

(C) Back emf

5. The principle of alternating current generator is based on :

(A) Ohm's law

(B) Faraday's law

(C) Lenz's law

(D) Kirchhoff's rules

(B) Faraday's law

6. When a motor is overloaded, then the magnitude of back emf:

(A) Zero

(B) Constant

(C) Increases

(D) Decreases

(C) Increases

7. Cora mutators are used in :

(A) AC generator

(B) DC generator

(C) AC motor

(D) None of these

(B) DC generator

8. To construct step down transformer ? 

(A) Ns=Np

(B) Ns>Np

(C) Ns<Np

(D) Both A & B

(A) Ns=Np

9. “Eddy currents” are set up in  a direction ______: 

(A) Perpendicular to the flux

(B) Parallel to flux

(C) Anti-Parallel to flux

(D) 45° to flux

(A) Perpendicular to the flux

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

(A) Average current

(B) Minimum current

(C) Constant current

(D) Maximum current

(D) Maximum current

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👉Other Chapters (PDF) of Physics Class 12 Punjab Textbook Board

✅Chapter 12

Electrostatics

✅Chapter 13

Current Electricity

✅Chapter 14

Electromagnetism

✅Chapter 16

Alternating Current

✅Chapter 17

Physics of Solids

✅Chapter 18

Electronics

✅Chapter 19

Dawn of Modern Physics

✅Chapter 20

Atomic Spectra

✅Chapter 21

Nuclear Physics