An extension cord is used with an electric weed trimmer
Chapter , Problem 119(choose chapter or problem)
An extension cord is used with an electric weed trimmer that has a resistance of 15.0 V. The extension cord is made of copper wire that has a cross-sectional area of 1.3 3 1026 m2 . The combined length of the two wires in the extension cord is 92 m. (a) Determine the resistance of the extension cord. (b) The extension cord is plugged into a 120-V socket. What voltage is applied to the trimmer itself?
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