198 THE ROYAL SOCIETY OF CANADA 



time and infinity. The Secondary Current is oscillatory with the 

 same frequency as the Primary, but advanced in Phase by the angle. 



(24) 



and is also zero at zero time and at infinity. 



Case I IL— Alternating Currents. 

 Let 



Hence the complete solution is 

 (29) 



-R, ,, ., A 



-^t Mo) N^ Shi '(ot+^+ a) 



I, = K£ L, (il.r + L.>^ 



JÇ 



Where 

 (30) 



Tan — — 



h.,co 



Let i, = when t = 



