An electric current is a flow of electric charge. Posted by Lee W
A substance through which electric charge can flow is called a conductor. Posted by Lee W
A substance through which electric charge cannot flow is called an insulator. Posted by Lee W
An electric current in a metal conductor is a flow of electrons. Posted by Lee W
The size of an electric current in a conductor is by definition the amount of charge passing any point of that conductor per second. Posted by Lee W
Charge gone past = (Steady current)(Time) Q=It Posted by Lee W
The potential difference between two points in a circuit is the energy lost by one coulomb as it moves from one point to the other. Posted by Lee W
A voltage when applied to a circuit is called an Electromotive Force(emf). Posted by Lee W
