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Question
In a meter bridge, two unknown resistances R and S, when connected between the two gaps, give a null point is 60 cm from one end. What is the ratio of R and S?
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Solution
Here, lR = 60 cm
∴ lS = (100 - 60) cm = 40 cm
∴ `"R"/"S" = l_"R"/l_"S" = 60/40 = 3/2`
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