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Electromagnetic Induction Physics - Electromagnetic Induction

Rajasthan Board (RBSE) - STD 12 Science - Physics (Rajasthan - English Medium). 356 questions in this chapter.

Question types

Electromagnetic Induction question types

356 questions across 1 question group — pick any mix to generate a Physics paper with step-by-step answer keys.

356
Questions
1
Question groups
5
Question types
Sample Questions

Electromagnetic Induction questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1M.C.Q (1 Marks)1 Mark
Assertion : The quantity L/R possesses dimensions of time.
Reason : To reduce the rate of increases of current through a solenoid should increase the time constant (L/R).
  • A
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • ✓
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • C
    If assertion is true but reason is false.
  • D
    If the assertion and reason both are false.

Answer: B.

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Q 2M.C.Q (1 Marks)1 Mark
Assertion : The back emf in a dc motor is maximum when the motor has just been switched on.
Reason : When motor is switched on it has maximum speed.
  • A
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • C
    If assertion is true but reason is false.
  • ✓
    If the assertion and reason both are false.

Answer: D.

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Q 3M.C.Q (1 Marks)1 Mark
Assertion : An ac generator is based on the phenomenon of self-induction.
Reason : In single coil, we consider self-induction only.
  • A
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • C
    If assertion is true but reason is false.
  • ✓
    If assertion is false but reason is true.

Answer: D.

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Q 4M.C.Q (1 Marks)1 Mark
Assertion : Soft iron is used as a core of transformer.
Reason : Area of hysteresis is loop for soft iron is small.
  • ✓
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • C
    If assertion is true but reason is false.
  • D
    If the assertion and reason both are false.

Answer: A.

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Q 5M.C.Q (1 Marks)1 Mark
Assertion : A transformer cannot work on dc supply.
Reason : dc changes neither in magnitude nor in direction.
  • ✓
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • C
    If assertion is true but reason is false.
  • D
    If the assertion and reason both are false.

Answer: A.

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