Electric current in simple circuits
Electric current flow is almost always a flow of negatively charged electrons from negative to positive. This seems funny and illogical but it is because the first researchers into electricity guessed which way the current would flow and they guessed wrong. The notes below explain
the circuit symbols used for the most common components of electric circuits
the connection between electric charge and electric current
the basic rules governing how electric current flows.
an introduction to some basic equations and calculations involving current flow
Free video lessons on electric circuits are available here
A larger collection of video lessons is available to buy on memory stick, details here.