Question

Two wires, one of copper and other of manganin, have equal length and equal resistance. Which wire in thicker? Given thet resistivity of copper in less than that of manganin.

Answer 1

manganin wire is thicker

Answer 2

Hi.

Manganin is an alloy of Cu with manganese and nickel. Since the latter two metals have resistivity greater than copper, the pure copper has lower resistivity and the manganin thus has to be thicker to have the same resistance..

Hope this helps u!!