# How do you calculate the current of a transformer?

To calculate the current of a transformer requires one to compare the two coils' magnetic fields. Connect the power flowing through both coils. Concurring to the principle of conservation of energy, the power, or rate of energy transfer, has to be equal between the two coils. Syndicate these two equations to derive a third equation that directly relates coil turns with the voltage difference between circuits.
Q&A Related to "How do you calculate the current of a transformer..."
 1. Equate the two coils' magnetic fields. Recall that a solenoid with current i and n turns has a magnetic field in the center of B=μin, where μ is the magnetic permeability http://www.ehow.com/how_5981907_calculate-current-...
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