Question

calculate the resistance of copper wire 20 meter long and diameter of 0.05 cm (specific resistance of copper =1.678×10^(-6)ohm-cm)

Answer 1

Use formula R= ro L/A
Where ro is specific resistance
Length is 20 m
Use area pi r square where r is radius.
Use 2 multiply by diameter of wire to find radius.

Answer 2

Answer:

f.,gmdf

Explanation: