An electric current is a flow of electric charge.
- This electric charge is carried by moving electrons(charge carriers) in a wire.
- Electric current is measured as rate of flow of charge.
- The SI unit for measuring an electric current is the Ampere (A).
- Electric current is measured using a device called an Ammeter.
- Electric current is denoted by symbol I.
- In past, it was considered that the current is the flow of protons from positive battery terminal to negative battery terminal through the circuit.
- Later it was discovered that the currentis the flow of electrons from negative battery terminal to positive battery terminal through the circuit.
As a convention, current is still considered to flow from positive terminal to negative
SI stands for “The International System of Units” (abbreviated from French: Système international d'unités)