R1 = ρL/A
R2 = ρL/2A = R1/2
R3 = ρL/3A = R1/3
R4 = ρL/4A = R1/4
Four wires are made of the same highly resistive material, cut to the same length, and connected in series.
A voltage V0 is applied across the series, as shown in the figure.
Find the voltage V2 across wire 2.
Give your answer in terms of V0, the voltage of the battery.
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