128 



Prof. R. Clausius on the 



in which we eliminate in the second equation the factor i, 

 standing near E. We thus obtain 



, TWr r AB /. kC \ , kA 2 I , e'C \ ,"1, 



These are the equations which are at the basis of all subse- 

 quent calculations. 



In order to make the equations clearer and at the same time 

 more convenient for calculations, we will replace the constants 

 in them by others, which are defined by the former ones ; 

 they are as follows : — 



a = 





b = 



1 



P = 



hAB 



- > 



a 



n — 



£ABC 



q .... 



a/3 ; 



1 = 



A 

 : B«' 



<r = 



= kB\ 



Ar- 



kB 2 Ge' 



(30) 



The equations thereby acquire the following form : — 



§ 12. Determination of the Strength of the Current which a 

 Machine produces when no extraneous Electromotive Force 

 comes into play. 



If the outer circuit by which the conductors belonging to 

 the machine itself are closed contains no further electromotive 

 force, but the electromotive force E induced in the rotating 

 coil is the only electromotive force in the whole circuit, then 

 if R is the total external resistance, we may from Ohm's law 



