ELECTRIC CELLS AND BATTERIES
1. Define primary cells.
2. Define secondary cells.
3. Draw and label diagrams of;
a. Leclanche cell (dry cell)
b. Mercury cell
c. Nickel Cadmium cell
4. Define “polarization” of electric cells.
5. Define “local action of electric cells.
6. Define e.m.f (E) or open circuit voltage of a cell.
7. Define potential difference (p.d) or closed circuit voltage of a cell.
8. Draw and label diagram of four 1.5V cells connected in series. Why are cells connected in series?
9. Draw and label diagram of four 1.5V cells connected in parallel. Why are cells connected in parallel?
10. (a) Draw and label a diagram of a lead-acid cell (car battery).
(b) What does the electrolyte (liquid) inside the lead acid cell consist of?
(c) What is the e.m.f of this cell?
11. (a) Draw and label a diagram of an alkaline cell.
(b) What does the electrolyte (liquid) inside the alkaline cell consist of?
(c) What is the e.m.f of this cell?
12. (a) Draw and label a diagram of the nickel-cadmium(NiCd) cell.
(b) What does the electrolyte (liquid) inside the nickel-cadmium cell consist of?
(c) What is the e.m.f of this cell?
13. Write 3 advantages and 3 disadvantages of the;
a. Lead acid cell
b. Alkaline cell
c. Nickel-cadmium cell.
14. What are the characteristics/signs of a lead acid cell when it is;
a. fully charged?
b. fully discharged?
15. Draw, label diagrams and explain the workings of the;
a. Hydrometer
b. High-rate Discharge Tester.
2. Define secondary cells.
3. Draw and label diagrams of;
a. Leclanche cell (dry cell)
b. Mercury cell
c. Nickel Cadmium cell
4. Define “polarization” of electric cells.
5. Define “local action of electric cells.
6. Define e.m.f (E) or open circuit voltage of a cell.
7. Define potential difference (p.d) or closed circuit voltage of a cell.
8. Draw and label diagram of four 1.5V cells connected in series. Why are cells connected in series?
9. Draw and label diagram of four 1.5V cells connected in parallel. Why are cells connected in parallel?
10. (a) Draw and label a diagram of a lead-acid cell (car battery).
(b) What does the electrolyte (liquid) inside the lead acid cell consist of?
(c) What is the e.m.f of this cell?
11. (a) Draw and label a diagram of an alkaline cell.
(b) What does the electrolyte (liquid) inside the alkaline cell consist of?
(c) What is the e.m.f of this cell?
12. (a) Draw and label a diagram of the nickel-cadmium(NiCd) cell.
(b) What does the electrolyte (liquid) inside the nickel-cadmium cell consist of?
(c) What is the e.m.f of this cell?
13. Write 3 advantages and 3 disadvantages of the;
a. Lead acid cell
b. Alkaline cell
c. Nickel-cadmium cell.
14. What are the characteristics/signs of a lead acid cell when it is;
a. fully charged?
b. fully discharged?
15. Draw, label diagrams and explain the workings of the;
a. Hydrometer
b. High-rate Discharge Tester.