Combinations of Cells in Series and in Parallel

Two cells of emf  $E_1$  and  $E_2$  and internal resistance  $r_1$  and  $r_2$ , are connected in parallel with each other. Obtain expressions for the equivalent emf and equivalent internal resistance of this parallel combination.

The combination of two identical cells, whether connected in series or parallel combination provides the same current through an external resistance of $2 \mathrm{\Omega }$. The value of internal resistance of each cell is

Two cells having the internal resistance $0.2\mathrm{ }\mathrm{\Omega }$ and $0.4\mathrm{ }\mathrm{\Omega }$ are connected in parallel. The voltage across the battery terminals is $1.5 \mathrm{V}$. The emf of first cell is $1.2 \mathrm{V}$, the emf of second cell is (in volt) $E$. Write the value of $\left[E\right],$ where $\left[ \right]$ is the greatest integer function.

 In parallel grouping of cells, we obtain more current.

Primary cells are connected in parallel to

If cells are joined in parallel, they have

State the advantages and disadvantages of cells connected in parallel

Which of these gases or liquids are not used as source of hydrogen in fuel cells

Fuel cell performance is not limited by __________

For which of these devices does negative charge carriers flow from anode to cathode in the external circuit

In fuel cell, ______ energy is converted into electrical energy.

Which one of the following is suitable for fuel cell electric vehicle $\left(\mathrm{FCEV}\right)$.

List the disadvantages of cell in parallel connection

What are primary cells used for?

What are the advantages of connecting electrical devices in parallel with the battery instead of connecting them in series?

The total effective resistance of the circuit can be reduced by connecting electrical appliances in parallel.

There is no division of voltage among the appliances when connected in parallel.

What are the advantages of connecting cells in parallel?

Two identical cells whether connected in parallel or in series gives the same current when connected to an external resistance $1.5\Omega .$ Find the value of internal resistance of each cell.

To draw a maximum current from a combination of cells, how should the cells be grouped?