Question 1
- Explain the following terms:
- primary cells;
- secondary cells.
- List three types of oscillators
- State three applications of secondary cell.
Observation
The expected responses were:
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Explanation of primary and secondary cells
- Primary cells are cells in which the chemical reaction that produces electricity cannot be reversed. They cannot be recharged after partial or complete discharge.
- Secondary cells are cells in which the chemical reaction responsible for the production of electricity is reversible. These cells can be recharged after partial or complete discharge.
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Types of oscillators
• Wien bridge oscillator
• Hartley oscillator
• Colpitts oscillator
• RC phase-shift oscillator
• Tuned collector oscillator
• Crystal oscillator
• Multivibrators
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Applications of secondary cell
• cell phones
• rechargeable lamps
• motor vehicles
• inverters
• laptop computes
• solar energy applications