Question

(a) List the factors affecting resistance of a conductor. (b) Calculate the length of Cu wire of diameter 3mm required to make a conductor of resistance 10Ω. Resistivity of Cu is 1.6 10-8 Ωm.

Answer 1

Answer:

a. there are four factors affecting resistance of a conductor

1. temperature

2. nature of the material

3. length of the material

4. cross section area of the material

b.length L=4.416km