Table of Contents
- 1 In which condition cell are used in series and which condition they are used in parallel?
- 2 Where does a series and parallel connection of cells are used?
- 3 When cells are connected in parallel then the EMF?
- 4 Why do we use series combination?
- 5 Where do we use a parallel combination of resistors?
- 6 What is series combination of cells?
- 7 How do you know if the cells are connected in parallel?
- 8 Why are battery cells connected in series and not in parallel?
In which condition cell are used in series and which condition they are used in parallel?
(i) It is advantageous to connect cells in series if the external resistance is large enough compared to the total internal resistance of cells. (ii) It is advantageous to connect cells in parallel if the internal resistance of each cell is high enough compared to the external resistance.
Where does a series and parallel connection of cells are used?
When external resistance is negligible in comparison to the internal resistance, then the cells are connected in parallel to get maximum current. Cells are connected in series when they are joined end to end so that the same quantity of electricity must flow through each cell.
When Should cells be connected in series in parallel?
The cells are said to be connected in parallel if positive terminals of all the cells are connected together at one point and their negative terminals at another point. The external resistor is connected between these two points.
What is the use of parallel combination of cells?
In parallel grouping, all anodes are connected at one point and all cathode are connected together at other points. Therefore when cells are connected in parallel, the voltage remains the same, and internal resistance decreases, hence the current increases. Therefore option 3 is correct.
When cells are connected in parallel then the EMF?
(ii) The effective e.m.f. of the cells of equal e.m.f. in parallel will be equal to e.m.f. of one cell.
Why do we use series combination?
Series combination of resistors are used in electrical appliances like in electrical bulbs which required high resistance to heat the filament. When one resistance in the series current carrying conductor gets disconnected then the whole circuit gets break and the remaining resistances in the circuit also stop working.
Where is series combination of cell used?
Assertion : A series combination of cells is used when their internal resistance is much smaller than the external resistance.
When cells are connected in series then?
In series, cells are joined end to end so that the same amount of current flows through each cell in the circuit. A set of batteries are said to be connected in series when the positive terminal of one cell is connected to the negative terminal of the succeeding cell.
Where do we use a parallel combination of resistors?
If two or more resistors are connected in parallel, then the potential difference across all the resistors is the same. Resistors in parallel connection are connected to the same nodes from both ends….
| R_{eq} | Equivalent resistance. |
|---|---|
| R_n | The resistance of an nth resistor |
What is series combination of cells?
Series combination: If some electric cells are connected in such a way as the negative plate of the first cell is connected to the positive plate of the second, negative plate of the second is connected to the positive plate of the third and so on, and then this combination is called series combination.
What is meant by parallel combination of cells?
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.
What is the difference between parallel and series aiding cells?
Only cells that have the same voltage should be connected in parallel. Whereas when the cells are connected in a series-aiding manner. The current rating of the series-aiding cells is the same as that for the cell with the lowest current rating.
How do you know if the cells are connected in parallel?
The cells are said to be connected in parallel if positive terminals of all the cells are connected together at one point and their negative terminals at another point. The external resistor is connected between these two points. Let ‘m’ identical cells each of emf E and internal resistance r be connected in parallel.
Why are battery cells connected in series and not in parallel?
When external resistance is negligible in comparison to the internal resistance, then the cells are connected in parallel to get maximum current. Cells are connected in series when they are joined end to end so that the same quantity of electricity must flow through each cell. 1. The emf of the battery is the sum of the individual emfs