Which of the following resistivity ρ v/s temperature (T) curves is most suitable to be used in wire bound standard resistors? ​

Question

Which of the following resistivity \((\rho)\)  v/s  temperature (T) curves is most suitable to be used in wire bound standard resistors?

(1) 

(2) 

(3) 

(4) 

Answer 1

Correct option is: (1) 

Resistivity is independent of temperature for wire bound resistors.