Two copper wires have equal cross-sectional areas and lengths of 2.0 m and 0.50 m, respectively. (a)
Question:
(a) What is the ratio of the current in the shorter wire to that in the longer one if they are connected to the same power supply?
(b) If you wanted the two wires to carry the same current, what would the ratio of their cross-sectional areas have to be? (Give your answer as a ratio of longer to shorter.)
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