Electricity has three features that include current, voltage and resistance. Current is the flow of electrons round a circuit that is measured by the ammeter in amps (A). Whilst the voltage, refer to as potential difference, is the driving force that circulates the current around the circuit that acts like an electrical pressure. The unit of measurement for this is Volts (V), which is measured by a voltmeter. Resistance is a force that slows down the current; consequently it slows down the flow of current. This is measured in Ohms (W).
Between the voltage and resistance there is equilibrium, where the voltage impels the current, whereas the resistance is opposing this electrical pressure. The relative sizes of the voltage and resistance decide how big the current will be. Increasing the voltage allows more current to flow, whilst increasing the resistance would decrease the amount of current flowing round the circuit.
Discovered by George Ohm in 1826, the current is in direct......
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