AP EAMCET · PHYSICS · Current Electricity
The balancing length for a cell is \(560 \mathrm{~cm}\) in a potentiometer experiment. When an external resistance of \(10 \Omega\) is connected in parallel to the cell, the balancing length changes by \(60 \mathrm{~cm}\). The internal resistance of the cell in ohms, is
- A \(1.6\)
- B \(1.4\)
- C \(1.2\)
- D \(0.12\)
Answer & Solution
Correct Answer
(C) \(1.2\)
Step-by-step Solution
Detailed explanation
\(\begin{aligned} & l_1=560 \mathrm{~cm} \\ & l_2=500 \mathrm{~cm}, R=10 \Omega\end{aligned}\) Internal resistance…
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