Electromagnetic Induction and Alternating Current: Transformer Losses MCQ

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Transformer LossesHardQuestion 20209

Question

Copper losses in a transformer are proportional to:

A
V²
B
I²
Correct
C
I
D
frequency

Correct answer

I²

Explanation

Copper losses = I²R (Joule heating in the winding resistance). They increase with the square of current. Core losses (eddy current + hysteresis) depend on frequency and flux density.

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