Answered: 20. Two cylindrical rods, one copper… | bartleby

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*20. "Two cylindrical rods, one copper and the other iron, are iden-
tical in lengths and cross-sectional areas. They are joined end to end to
form one long rod. A 12-V battery is connected across the free ends of the
copper-iron rod. What is the voltage between the ends of the copper rod?

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