This means that current can only flow in the other direction. Normally a diode will not conduct until a particular voltage is reached. Ellie and James explore series and parallel circuits.

Batteries are a part of our everyday life, and power everything from phones to gaming handhelds to laptops, but do those ...

Resistance ® close resistance (R)How difficult it is for current to flow. increases when components, for example a lamp, are added to a circuit in series. Potential difference close potential ...

We talk about electrical current — just like current in a stream. Many introductory books on electricity try to relate voltage to water pressure, electric current to water flow, and resistance ...