The resistance of a pieces of wire of lenght 20m are crossed-sectional area 8 x 10 6m2is? [Resistivity of the wire = 4 x 10-7 Ω m]

The resistance of a pieces of wire of lenght 20m are crossed-sectional area 8 x 10 6m2is?
[Resistivity of the wire = 4 x 10-7 Ω m]

Answer Details

since resistance R = p (l)/a
= (4 x 10-7 x 20)/8.0 x 10-6
R = 1.0 Ω