N Identical Cells, Each Of E.M.F Ε And Internal Resistance R, Are Joined In Series To Form A Closed Circuit. The Potential Difference Across Any One Cell Is _____

As given in the question, the current in the circuit:

$\begin{array}{l}\frac{n\varepsilon}{nr}\\\ \frac{\varepsilon}{r}\end{array}$

Electric circuit

The potential difference across the cell can be calculated as V_A – V_B

$\begin{array}{l}V_{A} – V_{B}\\\Rightarrow -\varepsilon + ir \\\Rightarrow -\varepsilon +\frac{\varepsilon }{r} \times r = 0 \end{array}$

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N Identical Cells, Each Of E.M.F E And Internal Resistance R, Are Joined In Series To Form A Closed Circuit. The Potential Difference Across Any One Cell Is ______