THE LOCALISATION OF BEEAKS AND FAULTS. 



381 



condition, being shunted by the entire resistance R. If the 

 deflection is D divisions, with a given line current, the deflec- 

 tion equivalent to the whole line current through the galvano- 

 meter is 



T^G + E ,. . . 

 D -^c-- divisions. 



Now, suppose the slider moved to an intermediate point, as 



Position 3. 

 Fig. 225.— Diagram of Universal Shunt. 



In position 2, R is then split into two parts ; one part, S, being 

 active as a shunt, and the other part, R— S, being in series 

 with the galvanometer. That is, the path through the galvano- 



