*think*I understand that in an

*""100% efficient""*circuit, the input and output of a transformer will always be the same, just in different ways. In a way, its like 5x10=50, and 25x2=50, and so on. Here is my question though:

If I have a supply of a constant 110 ACV, 10ma, what transformer would be most efficient at reducing the voltage and increasing the amperage? I tried using calculators online to calculate the power output given the power input, but failed because I didn't understand the terminology. In theory, by using the constant supply of power and putting it through a transformer,

*and a rectifier*, I would like to power a small can/hobby motor

Thanks so much,

Benjamin