Variable resistors have many practical applications including volume controls, eg on a radio, and speed controls, eg on a mixer or a drill. There is usually a dial or sliding switch on the ...

increases when components, for example a lamp, are added to a circuit in series. Potential difference close potential difference (V)The amount of energy transferred by each unit of charge passing ...

A commonly used protection function to prevent this is the application of ... current from the load of a circuit that uses power devices, such as inverters in series to the negative power supply ...