Two cylindrical rods, one copper (resistivity 1.72 x 10-8 2.m) and the other iron (resistivity 9.7 x 108 Q-m), are identical 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? Vcu Number i Units V

Two cylindrical rods, one copper (resistivity 1.72 x 10-8 2.m) and the other iron (resistivity 9.7 x 108 Q-m), are identical 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? Vcu Number i Units V