Question

The resistance of a 2 km long wire of radius 1 mm having resistivity 3.44 x 10^-8 ohm metre is


ans fast extremely urgent!! ​

Answer 1

Answer:

Explanation:-

Length of copper wire=2 km = 2000 m

Radius of copper wire=1 mm = 1×10^-3

Resistivity of wire=3.44 X 10^-8

Resistance=(Resistivity of wire × Length)/(Area)

                 

Resistance=(Resistivity of wire × Length)/(πr²)

You can use this formulae to find the answer .