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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 In case of inductor , energy is stored in the
  • A. Electric field
  • B. Magnetic field
  • C. Potential field
  • D. Gravitational field
2 Energy stored in inductor is.
  • A. 1/2 L I<sup>2</sup>
  • B. 1/2 LI
  • C. 1/2 L2I
  • D. 1/2 L2I2
3 By winding the coil around a less magnetic core, self induction.
  • A. Will increase
  • B. Will decrease
  • C. Remain same
  • D. First increase then decrease
4 When back emf in motor is zero, it draws.
  • A. Zero current
  • B. Minimum current
  • C. Maximum current
  • D. Steady current
5 One henry is equal to
  • A. 1 ohm x 1 sec
  • B. 1 ohm x 1 hertz
  • C. 1 ohm x 1 metre
  • D. All of above
6 Energy density of an inductor is:
  • A. UM=1/2μ<sub>∘</sub>/B<sup>2</sup>
  • B. Um = 2μ<sub>∘</sub>/B
  • C. UM = 1/2B<sup>2</sup>/μ<sub>∘</sub>
  • D. Um = 2B<sup>2</sup>/μ<sub>∘</sub>
7 Energy stored in an inductor is:
  • A. 1/2L<sup>2</sup>I
  • B. 1/2L<sup>2</sup>/I
  • C. <sub>1/2LI</sub><sup>2</sup>
  • D. 1/2LI
8 The winding of the electromagnet in motor are usually called.
  • A. Magnetic coils
  • B. Field coils
  • C. Electric coils
  • D. electric o electric coils
9 The device in which induced emf is statically induced emf is:
  • A. Transforms
  • B. AC generator
  • C. Alevator
  • D. Dynamo
10 Transformer is used to change
  • A. Electric power
  • B. Magnetic field
  • C. Alternating voltage
  • D. Phase of A.C.

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