Special EMU Units The base units in the EMU unit system are identical to the SI units with the following exceptions: Table 3-16: Special Base Units in the EMU Unit System Base quantity name symbol length centimeter cm mass gram g electric current abampere, biot N/A The EMU unit system includes the following derived units that differ from the corresponding SI units: Table 3-17: Derived EMU Units in COMSOL Derived quantity name symbol acceleration galileo Gal capacitance abfarad N/A conductance absiemens N/A electric charge abcoulomb N/A electric resistance abohm N/A electric potential difference, voltage abvolt N/A energy erg N/A force dyne dyn inductance abhenry N/A magnetic flux abweber N/A magnetic flux density abtesla N/A pressure barye N/A speed kyne N/A