6 



Mr. S. Bidwell. 



[Feb. 1, 



6. Variation of Resistance with Varying Current and Constant 

 Pressure. 



The same effect may be exhibited in another form by varying the 

 current while the pressure remains constant. Table V gives the 

 variations in the resistance with currents of from *01 to *2 ampere, the 

 pressure at the point of contact being throughout 1 grm. 



Table V. — Changes of Eesistance produced by Current, the 

 Pressure remaining Constant at 1 grm. 



Current. Eesistance. 



Ampere. Ohms. 



•oi n-4 



•02 10*8 



•03 10-4 



•04 9-8 



•05 9-6 



•06 8-9 



•07 8-5 



•08 8-2 



•09 7-9 



•1 7-6 



•15 5-6 



•2 4-5 



The results are also shown in the curve fig. 4. 



