Why are constantan and manganin used for making standard resistances ?

Why are Constantan and Manganin used for making standard resistors?

(i) Define the term drift velocity . (ii) On the basis of electron drift , derive an expression for resistivity of a conductor in terms of number density of free electrons and relaxation time. On what factors does resistivity of a coductor depend ? (iii) Why alloys like constantan and manganin are used for making standard restores ?

Answer the following: (i) Define the term drift velocity . (ii) On the basis of electron drift , derive an expression for resistivity of a conductor in terms of number density of free electrons and relaxation time. On what factors does resistivity of a coductor depend ? (iii) Why alloys like constantan and manganin are used for making standard restores ?

Why is manganin used for making standard resistors?

The alloys constantan and manganin are used to make standard resistance due to they have

The alloys constantan and manganin are used to make standard resistance due to they have