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In the electric eel, some 5,000 to 6,000 stacked electroplaques are capable of producing a shock at up to 600 volts and 1 ampere of current (600 watts) for a duration of two milliseconds.
The Electric field can also be noted in units of volts per meter (V/m). A convenient unit of electric potential energy is the electron volt (eV). One electron volt is the potential energy change of moving one electron's worth of charge, e, through one volt. One electron volt equals 1.602E-19 (J).