Cloclowat3595 Cloclowat3595

15-03-2024
Physics

contestada

A transformer is used to reduce the main supply of 220V to 22V. If the currents in the primary and secondary are 2A and 15 A respectively, then the efficiency of the transformer is
A. 0.65
B. 0.75
C. 0.8
D. 0.9

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