View Single Post
Mar11-12, 06:15 PM
P: 18
I mean,

If an ideal step up transformer increases the voltage from 10V to 20V say, why does the current halve?

I know it happens and I know the equations for it, I know to say otherwise would contradict the law that energy cannot be created.

But putting the equations aside, why exactly does it happen?

EDIT: The part I don't understand is that when the potential difference increases, and the resistance (in the secondary) remains constant (I think?), why does current decrease?
Phys.Org News Partner Physics news on
Symphony of nanoplasmonic and optical resonators produces laser-like light emission
Do we live in a 2-D hologram? New Fermilab experiment will test the nature of the universe
Duality principle is 'safe and sound': Researchers clear up apparent violation of wave-particle duality