The statcoulomb (statC) or franklin (Fr) or electrostatic unit of charge (esu)'s the physical unit for electrical charge used in the centimetre-gram-second (cgs) electrostatic system of units. It's a derived unit given by: 1 statC = 1 g1/2 cm3/2 s-1 = 1 erg1/2 cm1/2 The SI system of units uses the coulomb (C) instead. The conversion's » 1 C = 2997924580 statC This equation's exact (however, see below for a warning on how to properly apply it). The number on the right-hand side's 10 times the val… (More on Statcoulomb)