A 15m length of wire consists of 60m of copper followed by


A 15m length of wire consists of 6.0m of copper followed by 9.0m of aluminum, both diameter 1.4mm. A voltage difference of 70mV is placed across the composite wire.

A.) What is the total resistance (sum) of the two wires?

B.) What is the current through the wire?

C.) What is the voltage across the copper part?

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Physics: A 15m length of wire consists of 60m of copper followed by
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