⇒ All an electic CURRENT is is a flow of electrons that move around a circuit
⇒ The VOLTAGE is the driving force that moves the current around i.e. it is, essentally, a kind of electical pressure
⇒ The RESISTANCE is anything that slows down this driving force
⇒ When thinking of current, think of the flow of water within the pipes of your home
⇒ The voltage, when compared to the flow of water, would be like a pump that helps to push the water around
⇒ The resistance would be anything that restricts the flow of the water (i.e. it works against the pump)
⇒ If you were to increase the amount of water being pumped (i.e. the voltage), then more of the water will flow (i.e. the current increases)
⇒ If you were to increase the constrictions within the pipe (i.e. the resistance), then less of the water will flow (i.e. the current reduces)
⇒ Within a conventional current it is said that the current flows from positive to negative
⇒ However, the actual flow of a current is from negative to positive (i.e. it is the opposite of the conventional current)
⇒ Your home will have an alternating current (AC), which means the electricity will keep reversing its direction back and forth
⇒ Using a cathode ray oscilloscope (CRO) it is possible to see electrical current in graphical form
⇒ A direct current differs in that it always flows in the same direction