On interchanging the resistances, the balance point of a meter bridge shifts to the left by 10 cm. The resistance of their series combination is 1K Ω Ω . How much was the resistance on the left slot before interchanging the resistances?
Text Solution
Verified by ExpertsThe correct answer is:
A
Say resistances are R and 1000 – R
1000 – R gSA
For case-I 
For case-II 
Multiplying both equation
⇒ λ 2 – 10 λ = 11000 + λ 2 –210 λ
⇒ 200 λ = 11000
⇒ λ = 55 cm
putting in first equation
45R = 55000 – 55R
R = 550 Ω Ω
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