Electric field strength = resistivity of copper x current density where p= 1.72 x 10^-8 <span>ohm meter diameter = 2.05mm=.00205 m current = 2.75 A </span>get first the current density: current density = current/ cross section area find the cross section area cross section area = pi.(d/2)^2; cross section = 3.3 006x10-6 m^2 substitute the values current density = 2.75A/3.3006x 10-6m^2 current density=35.55 x1 0^2 A/m^2 Electric field stregnth =1.72 x 10^-8 ohm meter x 35.55 x10^2 A/m^2 Electric field stregnth= 46.415 Volts/m
The electric field strength of copper is 46.415 V/m.
