# resistivity and temperature scan rate [closed]

100 amperes pass through a copper bar of $5$x$5$ mm cross-section. The resistivity of copper is $1.7$x $10^{-8}$ ohm-metres.
Its volumetric heat capacity is $3.45$ joules per kelvin per cc.
Ignoring heat loss, what is the rate of increase of temperature of the copper in degrees C per second?

The question is pretty straightforward.
$R$$=$$r\tfrac{l}{A}$
$Q$$=$$I^{2}{R}{t}$