A string of 27 identical Christmas tree lights are connected in series to a 120 V source. The string dissipates 75 W. What is the equivalent resistance of the light string? Answer in units of Ω What is the resistance of a single light? Answer in units of Ω. What power is dissipated in a single light? Answer in units of W One of the bulbs burns out. The lamp has a wire that shorts out the bulb filament when it burns out, dropping the resistance of the bulb to zero. What is the resistance R(new) of the light string now? Answer in units of Ω. Find the power P(new) dissipated by the string now. Answer in units of W.

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