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path: root/1991/CH7/EX7.7/7.sce
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clc
clear
//input
l1=82.3//balance length  with switch open
l2=75.8//balance length with switch closed
R=9//resistance
//calculation
r=(R*l1/l2)-R//internal resistance
//output
printf("the internal resistence is %3.3f ohm",r)