330 Mr. F. C. Webb on " Inductive Circuits," or the 



and it is not necessary to recapitulate its applications here. 

 The following problem, however, is new, and is a good example 

 Fig. 5. Fig. 6. 



i — 'i 1 — V 



A B 



c 



of the mode of treating electrostatics by means of the theory of 

 inductive circuits, and shows the relation that exists between 

 quantity, density, tension, and inductive resistance. If two 

 conducting spheres, A and B, are connected to opposite poles 

 of a source, then an in- 

 ductive circuit will be A Fig. 7. 

 formed the resistances of 

 which consist of the dielec- 

 tric separating the surface 

 of each sphere from the 



nearest surrounding conductors. If the surrounding objects are 

 distant, these resistances are inversely proportional to the radii 

 of the spheres. Consequently if we call r the radius of A, and r 1 

 the radius of B, and represent by B the sum of the inductive re- 

 sistances of the circuit, we have 



r r 



and since the quantity generated on any one surface of the in- 

 ductive circuit is inversely proportional to B, we have 



E 



Q-i + V 



r r 



Thus, if we call that quantity unity which would be accumulated 

 on a sphere whose diameter is one, where one pole of the source 

 is connected to surrounding objects or "to earth/'' then Q in the 

 above equation would express that which would be accumulated 

 on each sphere when their radii are r and r 1 . 



Now I have shown elsewhere that the tension of the electri- 

 city on each sphere to surrounding objects or earth, or the elec- 

 tric potential of each sphere, is proportional to the quantity on 



