An 1700 W toaster, a 1500 W electric frying pan, and a 60 W lamp are plugged into the same electrical outlet in a 20 A, 120 V ci
rcuit. (Note: When plugged into the same outlet, the three devices are in parallel with each other across the 120 V outlet.) The three devices are in parallel when plugged into the same socket.(a) What current is drawn by each device?(b) Will this combination blow the 20-A fuse?
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The operating coefficient or performance coefficient of a heat pump is the ratio between the heating or cooling provided and the electricity consumed. The higher coefficients are equivalent to lower operating costs. The coefficient can be greater than 1, because it is a percentage of the output: losses, other than the thermal efficiency ratio: input energy. Mathematically can be written as,
Replacing,
Therefore the heat is 3.822kJ