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9. Moment of force, force x distance, or torque, kilogram x, metre, x metre, kg m2 s-2, (second), newton-metre, To ie, or, or, N m, 10. Power, work d, time, kilogram (metre)?, (second)?, second, kg m² s-3, or joule/second or watt, or Js-l or W, force, 11. Pressure, metre, kilogram x, /(metre)2, kg m-l s-2, area, (second), newton / (metre)? or pascal, esm, or, or N m2 or Pa, 1, 12. Frequency, 1, or second- or hertz, s-1 or Hz, time period, second, 13. Electric charge, current x time, ampere x second or coulomb, A s or C, work, kilogramx metre, 14. Electric potential, kg m? A-1 s-3, ampere x second, charge, second?, or electromotive, or joule/coulomb or volt, or JC or V, force (e.m.f.), kilogramx metre?, kg m? A-2 s-3, potential, 15. Electrical, resistance, amperex second / ampere, volt, OIX0 current, to, or ohm, or VA- or S, mot, or, ampere, VA or W, volt x ampere or watt, potential x current, above list, it can be noted that some derived units are complex when they are expressed in, derived units have been given special names after the name of the scientist, forçe, oule for work (or energy),watt for power, (or e.m.f-, 16. Electrical power