Step-Up Transformer Conceptual Problem

[longcatislong]

Homework Statement

Even for an ideal transformer, we can't get "something for nothing". If this transformer steps up the voltage, what must be decreased?
a) power
b) current
c) resistance

The Attempt at a Solution

Ep/Np=Es/Ns

I believe it's power or current, but these two are related. So I'm not sure which one to choose.

 

[berkeman]

Homework Statement

Even for an ideal transformer, we can't get "something for nothing". If this transformer steps up the voltage, what must be decreased?
a) power
b) current
c) resistance

The Attempt at a Solution

Ep/Np=Es/Ns

I believe it's power or current, but these two are related. So I'm not sure which one to choose.

An ideal transformer has no losses. What is your answer now?