Posted by Physics on Saturday, February 16, 2008 at 2:51am.
The total resistance of the power cord is
95*2*.0065 = 1.11 Ohms. Half of that occurs along one wire and the other along the return wire. (Two wires inside the power cord conduct the current back and forth; many power cords also have a third wire for grounding safety, but the third wire carries no current in proper operation). The total votage drop is V = IR = 3.3 Volts.
The voltage applied to the apparatus will be 120.0 - 3.3 = __ V
Shouldnt we multiply (95/2) by 2 in finding the total resistance.
I did multiply 95 m (the cord length) by 2 to get the total length of wire.
<<95*2*.0065 = 1.11 Ohms.>>
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