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Incorrect use of units for current and capacity In an article in a recent model magazine there were ten references to cell capacity. Only one used correct units (mAh); the other nine used "milliamps", which is not a unit of capacity but of current. Does it matter? YES. To the initiated it is merely irritating, but to the uninitiated it is misleading and confusing. Many modellers pick-up their knowledge of electrical units from such articles. This note is to help them recognise errors and to compensate for them. Usually, there are several equally-correct ways to define the same quantity, such as hours and minutes, or amps and milliamps. It makes good sense to use units with the most-convenient magnitude. |
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