Ciruits

 Most circuits are made out of components, and circuits are made in closed loops. 

The most common way a circuit is powered is by a cell, connected via a wire, one of the most common components in circuits are filament lamps, which are connected via the wire, and glow when connected to the cell or battery.

We can also connect a switch to the wire so that we can stop the flow of electricity from reaching the bulb. 

Sometimes you would write I electricity, when measuring electricity flowing through a wire they are named amps, or amperes are written with the letter A.

Potential Difference is the force driving the electricity around the wire, supplied by the battery or cell. It is like the pump that pumps the electricity through the wires.

Then, there is voltage, which is measured in Volts or V and is electricity supplied by the cell or battery.

Lastly, there is resistance which resists the flow of elections it slows down the speed of electrons we name it ohms using the Greek letter omega Ω

So when we are writing out a circuit, we first need a cell or battery, most commonly written by 2 lines, parallel to each other, one line taller than the other, the taller line is positive and the shorter one is negative, and electricity will flow from the positive side to the negative side.