Question

which of the following has low resistivity?

nichrome ,manganese ,constantan ,copper

Answer 1

Copper has the lowest resistivity of all the metals here. Resistivity of Cu is 1.68×10^−8 Ωm

Then constantan which has a resistivity of 4.9×10^-7Ωm

Followed by nichrome which has a resistivity of 1.10×10^-6Ωm

Manganese has the highest resistivity, it has a resistivity of 1.44×10^-6Ωm

All the resistivity figures are taken at 20⁰C