The resistance of a wire is given by the formula:
R = ρL/A
where R is the resistance, ρ is the resistivity, L is the length of the wire, and A is the cross-sectional area.
Substituting the given values, we get:
R = (5×10^-7 ohm) x (20m) / (8×10^-6m^2)
R = 1.25 ohm
Therefore, the resistance of the wire is 1.25 ohm.
The resistance of a piece of wire of length is 20m and cross-sectional area 8×10^-6m^2 is ? [Resistivity of wire =5×10^-7 ohm]
1 answer
1 answer