- #1
Matt512
- 17
- 0
Homework Statement
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.
Homework Equations
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 don't know if am on the right way.