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atomic unit of current  Numerical value  6.623 618 237 510 x 10-3 A  Standard uncertainty  0.000 000 000 013 x 10-3 A   Relative standard uncertainty  1.9 x 10-12  Concise form  6.623 618 237 510(13) x 10-3 A       Click here for correlation coefficient of this constant with other constants Source: 2018 CODATA      recommended values  Definition of uncertainty       Correlation coefficient with any other constant