Question
(a) What is the resistance of a lightbulb that uses an average power of 75.0 $\mathrm{W}$ when connected to a 60.0 $\mathrm{Hz}$ power source having a maximum voltage of 170 $\mathrm{V}$ ? (b) What If? What is the resistance of a $100-\mathrm{W}$ lightbulb?
Step 1
Step 1: We know that the resistance R is given by the formula $R = \frac{V_{rms}^2}{P}$, where $V_{rms}$ is the root mean square voltage and P is the power. Show more…
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(a) What is the resistance of a lightbulb that uses an average power of 75.0 W when connected to a 60.0-Hz power source having a maximum voltage of 170 V? (b) What If? What is the resistance of a 100-W bulb?
(a) What is the resistance of a lightbulb that uses an average power of 75.0 W when connected to a 60.0 - Hz power source having a maximum voltage of 170. V? (b) What is the resistance of a 100. - W lightbulb?
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