METRIC SYSTEM AND POWERS OF TEN Basic Electrical TheoryTo use the prefixes listed in Table A-4, divide the value of the unit by the value of the prefix,and then add the prefix to the unit.TABLE A-4METRIC PREFIXES USED in ELECTRICITYPrefix(lettersymbol)Valuemega (M) million 1,000,000kilo (k) thousand 1,000milli (m) thousandth 0.001micro (µ) millionth 0.000,001nano (n) thousand-millionth 0.000,000,001pico (p) million-millionth 0.000,000,000,001PowersofTenAnother way to express large and small values is to convert the value to powers of 10. This isa convenient way to express values and keep the units in the basic unit notation, rather thanconverting from one unit of measure to another unit that may be larger or smaller, as we did inmetric prefixes above.ES-01 Page A-4 Rev. 0
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