Current is a measure of how much electric charge flows through a circuit. The more charge that flows, the bigger the current. Current is measured in amperes. The symbol for ampere is A. For ...

The simplest complete circuit is a piece of wire from one end of a battery to the other. An electric current can flow in the wire from one end of the battery to the other, but nothing useful happens.

“The major problems in the world are the result of the difference between how nature works and the way people think.” — Gregory Bateson (1972, Steps to an Ecology of Mind) In the hush before ...