1. The problem statement, all variables and given/known data A power station supplies a factory with 1MW of electrical power at a p.d of 10KV. The total resistance of both cables between power station and factory is 0.5 ohm. Find the percentage of the power station output power which is delivered to the output factory.How does this figure change if the supply p.d s only 250V. 2. Relevant equations 3. The attempt at a solution Well , i tried to find I , which is I = p/v = (106)/(103)=1000A Then i use = I2R And get 5*105 But i dont know if am on the right way.