In a potentiometer experiment if the voltage across resistance R and R + r are balanced at the length l 1 and l 2 respectively the value of resistance r will be

Question

In a potentiometer experiment if the voltage across resistance R and R + r are balanced at the length l 1 and l 2 respectively the value of resistance r will be, l 1 - l 2 l 2 R, l 1 - l 2 l 1 R, l 2 - l 1 l 1 R, l 2 - l 1 l 2 R

MARKS App · Accepted Answer

V R = k l 1 V R + r = k l 2 R + r R = l 2 l 1 1 + r R = l 2 l 1 r R = l 2 l 1 - 1 r R = l 2 - l 1 l 1 r = l 2 - l 1 l 1 R

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