and current. It is used to test electrical components such as diodes and capacitors. A multimeter has a dial surrounded by ...

An electric current can flow in the wire from one end ... Make sure you know the difference between these two symbols, a cell is one big and little vertical line (to indicate positive and negative ...

Key fact Electrical current is the rate of flow ... the unit for current (also abbreviated as 'A') but the symbol for 'current' is 'I'.