Answer
a. 1200 watts
b. 100 watts
Work Step by Step
Use equation 18–6b.
a. $P=\frac{V^2}{R}=\frac{(120V)^2}{12\Omega}=1200W$
b. $P=\frac{V^2}{R}=\frac{(120V)^2}{140\Omega}=100W$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.