RMS Current Help: What is the Primary Coil's Current in a Transformer?

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To find the RMS current in the primary coil of a transformer connected to a 130 V/60 Hz outlet with a secondary coil dissipating 64 W, the power input can be assumed equal to the power output in an ideal transformer. Therefore, the power for the primary coil is also 64 W. Using the formula I = P/V, the RMS current can be calculated as I = 64 W / 130 V. This results in an RMS current of approximately 0.492 A in the primary coil. The discussion emphasizes the assumption of ideal transformer conditions for this calculation.
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Homework Statement


The primary coil of a transformer is connected to a 130 V/60 Hz wall outlet. The secondary coil is connected to a lamp that dissipates 64 W. What is the rms current in the primary coil?


Homework Equations





The Attempt at a Solution


I = P/V
but I don't have P for the primary
 
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If the transformer is ideal then the power output is the same as the power input.
 
So it is 64W??
 

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