A "75-watt" lightbulb uses an average power of 75 W when connected to an rms voltage of 120 V. a. What is the resistance of the lightbulb? Answer: ? b. What is the maximum current in the bulb? Answer: A c. What is the maximum power used by the bulb at any given instant of time? Answer: W
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We know that the power used by the bulb is 75 watts and the rms voltage is 120, so: 75 = 120^2/R Solving for R, we get: R = 192 ohms Show more…
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