DIMENSIONS OF THE PRINCIPAL UNITS. 593 



DERIVED ELECTRICAL UNITS. 



Electrostatic Electromagnetic 



System. System. 



31 11 



Quantity of electricity 



Electrical surface density . . . . ^ r ,_i,, -, rT ! 



Electrical displacement . . . 



Electrical force 



Electrical field 



31 51 



Flow of electrical force . . . 



Specific inductive capacity .... I [L 2 T 2 ] 



Electrostatic potential ^ rT i,,ir^_n r T f i, 



Electromotive force. 



Electrostatic capacity 



Strength of current. 



Resistance [L^T] 



DERIVED MAGNETIC UNITS. 



Electrostatic Electromagnetic 



System. System. 



1 i .11 



Quantity of magnetism [L 2 M 2 ] [L 2 M 2 T 1 ] 



3. ! 11 



Surface density [L~ 2 M 2 ] 



Magnetic force ") JL i, 



Magnetic field ) [L 2 M 2 T~ 



Flow of magnetic force [L^M^T" 2 ] 



3 1 



Magnetic potential 



Magnetic power [I 



Magnetic moment [L^M 2 "] [L 2 M Y T~ 1 ] 



li 11 



Strength of magnetisation .... [L~ 2 M 2 ] [L~" 2 "M^"T~ ] 



Coefficient of magnetisation . . . ") r T _ 2 r r o-i 



Magnetic permeability ) 



3 i 1 i 



Verdet's constant [L~ 2 M~ 2 T 2 ] [L~ 2 M~ 



Coefficients of mutual induction and^ ^ -1T 2 1 FT 1 



of self-induction ) 



QQ 



