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Electrical current is measured in Amperes which is abbreviated to amps.

When dealing with formulae the letter I is used to represent current, for example:

Power = Voltage × Current = volts × amps = V × I

Small currents in electrical engineering use the lower case i; this can cause confusion with the lower case i that mathematicians use for √-1, so they use j for √-1 instead.

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9y ago

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