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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.

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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

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

Sr. # Questions Answers Choice
1 In A.C. generator , when plane of coil is perpendicular to magnetic field, then output of generator is.
  • A. NwAB
  • B. 2pi f
  • C. Maximum
  • D. Zero
2 When a coil is moved in a uniform magnetic field, an induced emf is produced due of change in
  • A. Flux density
  • B. Electric flux
  • C. Magnetic flux
  • D. Magnetic field strength
3 Lenz's law was given by Heinrich lenz in:
  • A. 1894
  • B. 1904
  • C. 1854
  • D. 1834
4 When the back emf in a current is zero, it draws
  • A. Zero current
  • B. Maximum current
  • C. Minimum current
  • D. Steady average current
5 Step up transformer is used.
  • A. Step up D.C. voltage
  • B. Step up A.C. voltage
  • C. Step up both A.C and D.C.
  • D. Step up A.C. current
6 The application of mutual induction is a.
  • A. D.C. motor
  • B. Radio
  • C. Television
  • D. Transformer
7 If speed of rotation of a generator is doubled the output voltage will be.
  • A. Remain same
  • B. Double
  • C. Four time
  • D. One half
8 The magnitude of back emf:
  • A. Increases with sped of motor
  • B. Decreases with speed of motor
  • C. Remains same 
  • D. None of above
9 Mutual induction play role in.
  • A. Generator
  • B. D.C. motor
  • C. Galvanometer
  • D. Transformer
10 If the north pole of a magnet moves away from a metallic ring
  • A. Clockwise
  • B. Anticlockwise
  • C. First clockwise and then anticlockwise
  • D. None of above

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