Why is very less heat generated in long electric cables than in filaments of electric bulbs?

(N/A) The heat generated in a conductor is given by Joule's law of heating,$H = I^2Rt$,where $I$ is the current,$R$ is the resistance,and $t$ is the time.
Since the electric cables are made of good conductors like copper or aluminum,they have very low electrical resistance $(R)$.
In contrast,the filament of an electric bulb is made of tungsten,which has a very high melting point and high electrical resistance $(R)$ to produce light through incandescence.
Because the heat generated $(H)$ is directly proportional to the resistance $(R)$,the high resistance of the filament results in significant heat production,whereas the low resistance of the cables results in minimal heat generation.