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Question 20189
JEE Physics · Hard

Electromagnetic Induction and Alternating Current: Ideal Transformer — Power MCQ

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Ideal Transformer — PowerHardQuestion 20189

Question

An ideal transformer delivers the same power as supplied because:
  1. A
    It has no resistance
  2. B
    It stores energy in its core
  3. C
    No energy is lost — V₁I₁ = V₂I₂
    Correct
  4. D
    The turns ratio determines power

Correct answer

No energy is lost — V₁I₁ = V₂I₂

Explanation

For an ideal transformer: V₁I₁ = V₂I₂. Stepping up voltage means stepping down current proportionally, conserving power. Real transformers lose energy to eddy currents, hysteresis, and resistance.

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