A step-up transformer increases 14.7V to 115V. What is the current in the second

Question

A step-up transformer increases 14.7V to 115V. What is the current in the secondary as compared to the primary? Assume 100 percent efficiency. (If the secondary current is twice as big as the primary, enter 2.0. If it is half as much, enter 0.5, etc) A step-up transformer increases 14.7V to 115V. What is the current in the secondary as compared to the primary? Assume 100 percent efficiency. (If the secondary current is twice as big as the primary, enter 2.0. If it is half as much, enter 0.5, etc)

Explanation / Answer

apply in a transformer Vs/Vp = Ns/Np = Ip/Is
so Is/Ip = 14.7/115
Is/Ip = 0.1278
Is = 0.1278 times of Iprimary

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