Studied by 2 peoplePotential difference
________ is increased using a step- up transformer.
Transformers
________ are nearly 100 % efficient, so the power in primary coil= power in secondary coil.
Nation Grid
Electricity is distributed via the ________.
Potential difference
________ is changed by a transformer.
400,000V
Voltage is______ for efficient transmission
high pd and low current
The national grid uses
current in secondary coil = p.d. across primary coil
p.d across secondary coil x_________________ x current in primary coil
as low as possible
For it to be cheap, keep the current_______
in the morning and evening
Demand is highest__________
below maximum output
Power stations run_________
Note
Flashcard