Physics Problem!! What do i do with this question???...can sum1 help??? The element of an electric fire consists of 5m of wire of 0.5mm diameter. The resistivity of the wire at 150C is 1.12 * 10^-6 Ωm. When connected to a 240V supply the fire dissipates 2 kW and the temperature of the element is 1015 C. Determine a value for the mean temperature co-efficient of resistance of the wire??