34. (II) A model-train transformer plugs into 120-V ac and
Chapter 21, Problem 34(choose chapter or problem)
34. (II) A model-train transformer plugs into 120-V ac and draws 0.35 A while supplying 7.5 A to the train, (a) What voltage is present across the tracks? (b) Is the transformer step-up or step-down?
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