A Heating Element Made of Nichrome Wire (Temperature Coefficient of Resistivity

Multiple Choice

A heating element made of nichrome wire (temperature coefficient of resistivity, $\alpha$ = 0.400 $\times$ 10^-3 K^-1) is connected to a source.When it has just been turned on and its temperature is 20ºC,it dissipates 960 W of power.What power is dissipated when its temperature has risen to 300ºC?

A) 1.1 $\times$ 10³ W
B) 9.6 $\times$ 10² W
C) 8.6 $\times$ 10² W
D) 8.6 $\times$ 10³ W
E) 1.1 $\times$ 10² W