Chapter 22 Capacitance, Dielectrics, Electric Energy Storage 2. Unit of capacitance SUnit: coulomb per volt farad(F)(法拉) 1微法(μF)=106F 1皮法(pF)=106μF=1012F 3. The capacitance of an isolated conducting sphere FOR 41E。R RChapter 22 Capacitance, Dielectrics, Electric Energy Storage 2. Unit of capacitance R R Q Q V Q C 0 0 4π 4π   = = = R Q 3. The capacitance of an isolated conducting sphere 1微法（F）=10-6F 1皮法（pF）= 10-6  F = 10-12 F SI unit: coulomb per volt farad (F) (法拉)