Q. 294.0( 2 Votes )

A room has AC run

Answer :

Given:


Power consumption for 5 hours = 10 units


Power consumption for 1 hour = 2 unit = 2000J/s


Radius of wire = r = 1mm


Length of wire = l = 10m


We know




I 9A


Resistance in copper wire


Power lost as heat in copper wire


Fractional loss in copper wire


Power lost as heat in aluminum wire


Fractional loss in aluminium wire


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