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 ______

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 VA – VB

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


Related Questions

  1. Write Two Differences Between Emf And Potential Difference.
  2. Define 1 volt, Potential difference.
  3. Sensitivity of potentiometer can be increased by___________
  4. How does a potentiometer measure EMF?
  5. What is potential difference of a cell?

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CBSE CLASS XII Related Questions

  • 1.
    Two heaters rated as \((P_1,V)\) and \((P_2,V)\) are connected in series across a dc source of \(V/2\) volt. The power consumed by the combination will be –

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      • \(\dfrac{P_1+P_2}{2}\)
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    • 2.
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        • 3.
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            • 4.
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                • 5.
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                  • 6.
                    Two parallel plate capacitors X and Y are connected in series to a 6 V battery. They have the same plate area and same plate separation but capacitor X has air between its plates, whereas capacitor Y contains a material of dielectric constant 4. Calculate the capacitances of X and Y, if the equivalent capacitance of the combination of X and Y is \( 4 \, \mu\text{F} \). Calculate the potential difference across the plates of X and Y.

                      CBSE CLASS XII Previous Year Papers

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