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- Thread starter cragar
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P=U*I so P is a constant in a transformer ( at least consider it so)

If so then IF p=5W there are an infinity of possibilities for U and I. Like U=5 I =1 or I=5 U=1 etc.

That is what happens in a transformer, energy is the same it is just expressed differently.

For different ways transformers can be made consult wikipedia.

I"ve made the exemple in direct current for easy understanding :P

- #3

russ_watters

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You have the wrong idea about what a transformer does: A transformer keeps the energy constant while increasing the voltage, which meansI am not sure where this energy is coming from , so are we actually getting more electrons to flow per second and after it goes through the coil . does the coil allow it to draw more current from the battery.

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i see thanks for your answers

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