A cell of and internal resistance is connected with another cell of and internal resistance (as shown in the figure). The potential difference across points and is
Step1: Given data.
Electromotive force of cell
Electromotive force of cell
Resistance,
Resistance,
Step2: Finding the equivalent current in the circuit.
We know that:
Where, equivalent current, effective ,equivalent resistance.
According to Kirchhoff Voltage Law:
In Given figure Resistance In Series:
Therefore,
Step3: Finding potential difference across points and
Applying Kirchhoff Voltage Law between points and .
Hence, Option C is correct option. The potential difference across points and is