Question
How much ac rms current must be in a $10-\Omega$ resistor to produce an average power of $15 \mathrm{~W} ?$
Step 1
We know that the average power in a resistor is given by $P_{avg} = I_{rms}^2 \cdot R$ where $I_{rms}$ is the rms current and $R$ is the resistance. Show more…
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