i 3 6 



COEFFICIENTS OF INDUCTION. 



and the components of the action are 



1 



1 L 



l 

 L 



or from equation (29) 



(33) 



Fig. 141. 



It will be sufficient then to replace the functions \l/ t X, and ^, in 

 each particular case, by their values given above. 

 It is clear that generally 



For a point P , in the mean plane of the coil, we shall have then 



(34) 



V=0, 



Y = 0. 



