In a normal conductor heat is generated at .a rate . Therefore a current-carrying conduc...

In a normal conductor heat is generated at .a rate . Therefore a current-carrying conductor must dissipate heat effectively or it can melt or overheat the device in which it is used. Consider a long cylindrical copper wire of diameter 0.75 mm. If the wire can dissipate along its surface, what is the maximum current this wire can carry?