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A copper wire with resistance p = 1.67 x 10 8 92 . m with a length of L = 20.0 m and a cross-sectional

A copper wire with resistance p = 1.67 x 10 8 92 . m with a length of L = 20.0 m and a cross-sectional radius of r = 0.05 m is used to connect two objects. (a) Find the resistance of the copper wire (b) If a voltage of 120 V is sent through the wire, find the current through the wire (c) If the length of the wire is doubled, does the current increase, decrease, or stay the

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