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1. A 10.0 m length of wire consists of 5.0 m of copper, followed by 5.0...

1.

A 10.0 m length of wire consists of 5.0 m of copper, followed by 5.0 m of aluminum. Both have a diameter of 1.4 mm. A potential difference of 95 mV is placed across the composite wire.

*Note* the resistivity of copper is 1.68 x 10 -8  Ohm * m and the resistivity of aluminum is 2.65 x 10 -8  Ohm * m

A. (worth 10 points) What is the equivalent Resistance of the composite wire?

B. (worth 5 points) What is the Current through the wire?

C. (worth 5 points) What are the Voltages across the aluminum part and across the copper part?

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