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15th Chapter

12th Class Physics Chapter 15 Test

Here you can prepare 12th Class Physics Chapter 15 Electromagnetic Induction Test. Click the button for 100% free full practice test.

2nd Year Physics Chapter 15 Online MCQ Test for 12th Class Physics Chapter 15 (Electromagnetic Induction)

This online test contains MCQs about following topics:

- Induced EMF and Induced Current
- Motional EMF
- Faraday's Law and Induced EMF
- Lenz's Law and Direction of Induced EMF
- Mutual Induction
- Self Induction
- Energy Stored in an Inductor
- Alternating Current Generator
- D.C. Generator
- Back Motor Effect in Generator
- D.C. Motor
- Back EMF Effect in Motors
- Transformer

Ics Part 2 Physics Chapter 15 Test
ic

2nd Year Physics Chapter 15 Online MCQ Test for 12th Class Physics Chapter 15 (Electromagnetic Induction)

Sr. # Questions Answers Choice
1 Induced emf in A.C. generator can be increased by
  • A. Decreasing area of coil
  • B. Decreasing magnetic field
  • C. Increasing area of coil
  • D. Slowing down speed of coil
2 For inducing emf in a coil the basic requirement is that:
  • A. Flux should link the coil
  • B. Change in flux should link the coil
  • C. Coil should form a closed loop
  • D. Both (b) and (c) are true
3 The  Lenz's law is also statement of:
  • A. Law of conservation of mass
  • B. Law of conservation of charge
  • C. Law of conservation of energy
  • D. Law of conservation of momentum
4
  • A. Lenz's law
  • B. Faraday's law
  • C. Ampere's law
  • D. None of these
5 The motional emf developed in a conduction depends upon.
  • A. Length
  • B. Orientation
  • C. Magnetic field
  • D. All of the above
6 The device in which induced emf is statically induced emf is:
  • A. Transforms
  • B. AC generator
  • C. Alevator
  • D. Dynamo
7 A real transformer does not change.
  • A. Voltage level
  • B. Current level
  • C. Power level
  • D. Frequency
8 Lenz's law was given by Heinrich lenz in:
  • A. 1894
  • B. 1904
  • C. 1854
  • D. 1834
9 Which one is not present in A.C. generator.
  • A. Armature
  • B. Magnet
  • C. Slip rings
  • D. Commutator
10 When the back emf in a current is zero, it draws
  • A. Zero current
  • B. Maximum current
  • C. Minimum current
  • D. Steady average current

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