Question

1. The resistivity of two conductors ‘A’ and ‘B’ are 1.62 x 10−8 Ω m and 5.20 x 10−8 Ω m respectively. Which of them is used in:

a. Transportation of electricity

b. The making of heating coils? Why?

Answer 1

Answer:

A is used in tranportation of electricity to reduce the loss of current

B is used for making coils bcz higher resistance is needed there.

as H=I^2×R×T