KENNELLY. — OSCILLATING-CURRENT CIRCUITS. 



379 



3.1623 kilowatts, is the power developed in the condenser. It starts 

 from zero, in the positive direction, at the moment of release. The 

 opposite sinusoid pi, of double frequency, and also of amplitude 

 3.1623 kw., is the power developed in the inductance. The condenser 

 and coil are reciprocally and successively generator and recipient in 

 respect to power. 



Time 



Degrees of Current Pliase 



Figure 5. Analysis of p. d., current, power, and energy in a simple resist- 

 anceless discharging circuit. 



The sinusoid Wi, of double frequency, is the graph of the energy 

 expended by the condenser and stored in the coil. It has an amplitude 

 of 1 joule above and below the line oo as axis. The total energy in the 

 coil, therefore, reckoned from zero, is 



2Wr.= 



UI 



2.) -2^^"' 



joules (8) 



