Two wires a and b of circular cross-section are made of the
Two wires A and B of circular cross-section are made of the same metal and have equal lengths, but the resistance of wire A is three times greater than that of wire B. What is the ratio of their cross section area? how do their radii compare?
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two wires a and b of circular cross-section are made of the same metal and have equal lengths but the resistance of
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