If One cell is wrongly connected in series , How EMF drops by 2E?
Answers
As we know the most frequently used method to connect electrical components is Series Connection and Parallel Connection. Since the cell is an important part of an electric circuit. To know more about Cells, Series Connection and parallel Connection explore the article!
Cells
Cells generate electricity and also derives chemical reactions. One or more electrochemical cells are batteries. Every cell has two terminals namely:
Anode: Anode is the terminal from where the current flows in from out i.e. it provides an incoming channel for the current to enter the circuit or the device.
Cathode: Cathode is the terminal from where the current flows out i.e. it provides an outgoing current flow from the circuit or the device.
Learn more about Electric Charge here in detail
There are two simplest ways for cell connectivity are as follows:
Series Connection: Series connection is the connectivity of the components in a sequential array of components.
Parallel Connection: Parallel connection is the connectivity of the components alongside to other components.
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
Cells in Parallel Connection
Cells are in parallel combination if the current is divided among various cells. In a parallel combination, all the positive terminal are connected together and all the negative terminal are connected together.
Equivalent EMF/Resistance of Cells in Parallel
If emf of each cell is identical, then the emf of the battery combined with n numbers of cells connected in parallel is equal to the emf of each cell. The resultant internal resistance of the combination is,
r = (1r1 + 1r2 + 1r3 +…….. 1rn )-1
Equivalent EMF/Resistance of Cells in Series and Parallel
series connection
Assume the emf of each cell is E and internal resistance of each cell is r. As n numbers of cells are connected in each series, the emf of each series, as well as the battery, will be nE. The equivalent resistance of the series is nr. As, m the number of series connected in parallel equivalent internal resistance of that series and parallel battery is nr/m.
Answer:
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
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.