Two wires have the same resistance and radius. If the wires are made of platinum and copper with resistivities respectively of 11.0 x 10¬8 n · m and 1.70 x 10-8 Q· m, determine the ratio of their lengths. Lpt 6.47 %3D Lcu Check your algebra, you may have inverted the result.

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Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.