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Question 20180
JEE Physics · Medium

Electromagnetic Induction and Alternating Current: Eddy Currents MCQ

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Eddy CurrentsMediumQuestion 20180

Question

Eddy currents in a transformer core are reduced by using:
  1. A
    Thicker iron plates
  2. B
    Laminated sheets insulated from each other
    Correct
  3. C
    A steel core
  4. D
    Increasing the winding resistance

Correct answer

Laminated sheets insulated from each other

Explanation

Lamination breaks the eddy current path into smaller loops, drastically reducing eddy current magnitude (and hence I²R heating losses). The thinner the laminations, the lower the losses.

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