Answers

2016-03-22T14:25:31+05:30
For meter bridge :-

X = R(100-l) / l

, where X & R are resistances & l is balancing length

Putting values :-

= 5 = 15(100-l) / l

= l = 300 - 3l

= 4l = 300

= l = 300/4 = 75cm
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