Question

The resistance of a wire of 3mm2 cross sectional area and 6m length is 0.15 Ω

at 00 C. when temperature of the wire is raised to 650 C, the resistance is found

to be 0.2 Ω. Calculate the temperature co-efficient of resistance of the wire and

its resistivity at 00 °C .​

Answer 1

Answer:

The resistance of a wire of 3mm2 cross sectional area and 6m length is 0.15 Ω

at 00 C. when temperature of the wire is raised to 650 C, the resistance is found

to be 0.2 Ω. Calculate the temperature co-efficient of resistance of the wire and