230 



I'U<>< EEDING8 OJ THK AMKK1< AN A.CADEHT. 



where E= electromotive force in the circuit, not due to changes in 

 flux, 



6 10 16 20 



Figure 1(3. [Table XIII.] 

 Back-shearing curves for Bessemer soft etcel rod of diameter 1.906 cms. 



X = total magnetic flux of induction through the circuit in the 

 direction of the magnetic lines due to the current C, times the number 

 of turns of wire in the circuit. 



t = time variable, 



r= actual current at time t flowing in the direction in which E 

 acts, 



