An electrical wire is made from 1 mm-diameter copper wire, which is insulated with 1 mm-thick PVC insulator (k = 0.3 W.m.K). If the outer surface of the insulator is exposed to surrounding air at 30C with convective heat transfer coefficient of 5 W/m.K. In order to maintain good properties of PVC, the temperature should not be contacted with a surface with temperature higher than 50C. Determine Heat generated per one meter of this wire when it is used with maximum load The maximum electrical current through this wire. 3 mm PVC insulator 1 mm copper wire *** V = I x R and Power = V x I *** The electrical resistivity of copper, p = 1.68 x 10-8 ohm.m and R = (p.L) / A. Where R is the electrical resistance of the wire (ohm), L is the cooper wire length (m), and A is the cooper wire cross-sectional area (m)