When it comes to electrical circuits, there’s a lot to remember and understand. We've got you covered with this Intro to Circuits BBC Bitesize guide.

I came to engineering by way of the technician route. I learned electronics in a technical school and was taught that current flow was electron flow and all circuit analysis was done that way.

Many introductory books on electricity try to relate voltage to water pressure, electric current to water flow, and resistance to changes in pipe volume.

It demonstrates how static electricity is created and how current electricity flows through complete circuits, using examples like a train and various experiments.

Recommended Videos How does direct current work? Direct current is fairly straightforward. DC power strictly flows in one direction.

On the other hand, it could still be useful for detecting current flow in a circuit without having to directly interact with it.

Ring-shaped flow of ultracold atoms remembers how it has been stirred.