WE ARE ALL familiar with the word ‘Watt’, which we come across on our kettles, light bulbs, vacuum cleaners, hairdryers and much more. But what exactly is a Watt?
Well, the dictionary definition goes something like this:
■ Watt (W) The SI unit of power, equivalent to one joule per second, corresponding to the rate of consumption of energy in an electric circuit where the potential difference is one volt (V) and the current one amp (A).
Electrical terms
That’s quite a lot to get to grips with, so let’s simplify things.
First, you will no doubt have noticed that two other familiar electrical terms have crept into the picture, namely
