how is a transformer obeying ohm's law?

Question

anonymous · Answer

Yes, they do.

The confusion for most people comes from the fact that ohm's law says that when voltage goes up, current goes up; but conservation of power says that when voltage goes up, current goes down.

The reason it still applies is that a transformer divides a single circuit into what are actually two electrically-separate circuits. Ohm's law applies to each sub-circuit individually, while conservation of power must hold for the entire circuit as a who

anonymous · Answer

In a Transformer: the power at the primary side and the secodary side. are same. that means if it is a step up transformer - the voltage ate the secondary will be greater than the primary voltage BUT at the same time the current at the secondary goes down as compared to the primary.

$$V _{P}I _{P}= V _{\S} I _{\S}$$...
The two sides individually obey the Ohm's Law.