Published by:
CGP EDU Academic Team
Published on: September 12, 2026
Resistance are connected in a meter bridge circuit as shown in the figure. The balancing length l 1 is 40cm. Now an unknown resistance x is connected in series with P and new balancing length is found to be 80cm measured from the same end. Then the value of x will be_____ 
Text Solution
Verified by ExpertsThe correct answer is:
20
(20)
Sol. Initially, 
... (1)
Finally, 
...(2)
Divide (2) by(l)
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