Cells and Batteries Review Exercises

4.7 Cells and Batteries Review Exercises

1. State the difference between primary and secondary cells.
2. Make a sketch of a zinc-acid cell and label its parts.
3. Explain how polarization and local action are prevented in the Leclanché cell.
4. Draw a diagram of a Leclanché dry cell and label the parts.
5. State two important features of the lithium air.
6. State the three factors which determine the e.m.f. of a cell.
7. Use schematic symbols to show how four dry cells are connected so as to provide double the voltage of one cell.
8. Explain the difference between cells and batteries.
9. State three reasons why lithium ion battery is preferred to power a smartphone than lead-acid battery.