Question: A lightbulbs output is 60 W when it operates at 120 V. If the voltage is cut in half and the power dropped to 20

A lightbulb’s output is 60 W when it operates at 120 V. If the voltage is cut in half and the power dropped to 20 W during a brownout, what is the ratio of the bulb’s resistance at full power to its resistance during the brownout?

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