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Two wires of equal length one of copper and other of manganin have the same resistance. Which wire is thicker?

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` R = rho_c (l_c)/(A_c) = rho_m (l_m)/(A_m ) rArr (rho_c)/(rho_m) = (A_c)/(A_m) lt 1 `
` therefore ` Manganin is thicker.
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