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A particular residence uses
Assuming the wire from the generating plant to the house has a resistance of 90 ohms, how much potential difference will be dropped along the wire (in volts)?
What is the actual difference in potential which must be supplied by the generating plant in order for 120 volts to reach the residence?
How much power will the generating plant be producing (in watts)?
What is the efficiency of this method of power transformer (in percent)?
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