Physics Current

Question

An ideal transformer produces an output voltage that is 500% larger (e.g. a 6-fold increase) than the input voltage.

If the input current is 14 A (rms), what is the output current? 

Answer 1

Ideal transformers conserve energy perfectly. Thus the power of the primary should equal to the power of the secondary. Recall that power for an electric item is the product of the current flowing through it times the voltage difference across it.