International Library of Technology · Scranton, International Textbook Co. · leaf 205
ug between any two of them thecorresponding resistance coil is cut out, or sJwrt-circiiited;that is, the current passes from block to block through theplug instead of going through the coil, as this path offerspractically no resistance to the current. In this way theresistance of the arms of the… … 4 3 2 Fig. 1003. coils 1, ^, 3y 4-, 5^ and 6. The brass plug P is made to fittightly between the blocks. The current from the battery is not allowed to flow con-tinuously through the resistance coils, which might introduceerrors owing to the heating effect of the current, but thebattery circuit and…
Electrical engineering
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