national gird

Question 1

what is the national gird

Answer 1

is what distributes electricity to where it’s needed

Question 2

what is the order of things that pass electricity from power station to home/business and what do they do

Answer 2

power station-Power stations produce a relatively high current. If this went into the grid, huge amount of energy/ power would be lose as heat due to the resistance of the cables (as power lost P=IsquaredR).

step-up transformer- increases the voltage to around 132KV which decreases the current reducing the power lost due to heating in the cable. as p=VI if P in = P out (V and I are inversely proportional

national grid cables where the electricity goes from the power station to homes/businesses

step down transformer-A STEP-DOWN TRANSFORMER reduces the voltage down to a safer and usable 230 V for homes & businesses

home/business- electricity in your house