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The amp is a shortened version of the word amperes. Amperes was also the discoverer of the amp, thus the name. Amps are a unit of measurement, represented with the symbol A in a circuit diagram, that measures the flow of electrons in an electrical unit. You can measure amps using an amp meter, which is represented with the letter A in a circle, with a + sign to the side of it, on a circuit diagram. Some scientific laws use the amp, including Ohm's Law. This tells us that the flow, divided by the voltage, is how many ohms there are in a circuit. The flow is represented with I, the voltage with V and the resistance with R. This is the formula for it: V divided by I is equal to R. R = How many ohms there are. Example:
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