What Is the Correct Formula for Calculating Average Power in an AC Circuit?

AI Thread Summary
The discussion centers on calculating the average power in an AC circuit with given resistance, maximum current, and maximum voltage. The formula initially used was P(avg) = I(avg)V(max), which led to incorrect results. The correct approach is to use P(avg) = I(avg)V(avg) for accurate calculations. The user attempted to find the rms current but did not apply the correct voltage value. Understanding the distinction between maximum and average voltage is crucial for solving the problem accurately.
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Homework Statement



Given resistance of circuit 68 W, I(max) = .191 A, V(max) = 22.5, what is the average power of this circuit?

Homework Equations



P(avg) = I(avg)V(max)

The Attempt at a Solution



I took .191 and divided by sqrt(2) to get the rms current and multiplied by the max voltage 22.5. Not getting the right answer, though...
 
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P(avg) = I(avg)V(max)
It should be
P(avg) = I(avg)V(avg)
 

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