Electricity demand increases over winter. Which of the following reasons best explains why this is?
Fossil fuel power stations often only produce about 33% of the total electricity they could produce when operating at maximum output. Which two of the following reasons explain why is this?
The national grid transmits electrical power at a very high potential difference and a very low current. Why is this?
A nuclear power station in the UK develops a fault and needs to be shut down quickly so that it can be repaired. Which of the following types of power station could be quickly turned on to compensate for the supply lost by the nuclear power station shutting down?