Answer to Question #74535 in Physics for Rosy

Question #74535

Calculate the current in the load fed by the secondary of a 90% efficient step down transformer where the primary has 50× as many turns as the secondary, and where the primary current is 5.0A? Give your answer to 3 significant figures.

Expert's answer

I_s V_s=0.9 I_p V_p
I_s=0.9 I_p V_p/V_s =0.9 (50)5.0=225 A.

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