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Relation of I and V in secondry coil of transformer?

  1. Mar 3, 2010 #1
    One of the function of transformer is to increase the Voltage and decrease the current,It is according to P=IV.The decrease in the current will produce the loss in energy from the resistance of supply lines i.e P=I^2.R.

    My question is that the P=(V^2)/R is also the power loss and in case of increase in voltage it increases?
    HOw is it possible the Voltage will be greater but current will be samall,is it the failure of Ohm,s Law?
    What is in the 2nd relation that it disobey it,or what is the error in my concept?
    Plz give a comprehensive and simple answer of intermediate level.
     
  2. jcsd
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