how are the cell joined in series ? establish the expression for the current in the circuit
Answers
Cells in Series Connection
In series, cells are joined end to end so that the same current flows through each cell. In case if the cells are connected in series the emf of the battery is connected to the sum of the emf of the individual cells. Suppose we have multiple cells and they are arranged in such a way that the positive terminal of one cell is connected to the negative terminal of the another and then again the negative terminal is connected to the positive terminal and so on, then we can that the cell is connected in series.
Equivalent EMF/Resistance of Cells in Series
If E is the overall emf of the battery combined with n number cells and E1, E2, E3 , En are the emfs of individual cells.
Then E1 + E2 + E3 + …….En
Similarly, if r1, r2, r3, rn are the internal resistances of individual cells, then the internal resistance of the battery will be equal to the sum of the internal resistance of the individual cells i.e.
r = r1 + r2+ r3 + rn
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Explanation:
