Lesson: Electricity Transmission NetworksPhysics
In this lesson, we will learn how to describe how national electricity grids work and how they respond to changes in demand.
Sample Question Videos
What type of device can be used to increase the potential difference of electricity supplied to the national grid so as to increase the power transmitted while reducing energy lost to the surrounding environment?
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?