Question
(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?
Step 1
0 W, the frequency f = 60.0 Hz, and the maximum voltage V_max = 170 V. We are asked to find the resistance R of the lightbulb. We know that the power P is given by the formula P = V^2/R, where V is the voltage and R is the resistance. Show more…
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(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?
(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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