For given applied voltage, with the increase in frequency of the applied voltage

Answer: Option B

Eddy current loss in transformers is proportional to the square of the frequency of the applied voltage.

As the frequency of the applied voltage increases, eddy current loss increases. This is because higher frequencies induce greater eddy currents in the core material, leading to increased power loss.

Therefore, with an increase in the frequency of the applied voltage, Option B correctly describes that eddy current loss will increase.