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A Certain String of Christmas Tree Lights Has Twenty Bulbs,each

Question 11

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A certain string of Christmas tree lights has twenty bulbs,each rated at 3 watts.If there is no ground fault,how much current flows through the hot wire at the receptacle plug? Show calculations.How much flows through the neutral? Would the current flow likely be fatal if all of the current flowing through the hot wire would pass through a person's heart muscle?

Correct Answer:

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20 x 3 = 60 watts
I = W/V = 60/110 = .55...

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