SUMMARY
Electrons flow against their natural tendency in a battery, resulting in increased potential energy, which is defined as electromotive force (EMF). This process occurs in galvanic cells, where chemical energy is converted into electrical energy during charging and discharging cycles. Charging involves a reversible reaction under external current, while discharging occurs as electrons traverse the circuit, losing potential energy across resistances, creating a potential difference (PD). EMF is specific to energy sources like batteries and solar cells, whereas PD is a broader term applicable in various contexts.
PREREQUISITES
- Understanding of electromotive force (EMF) and potential difference (PD)
- Familiarity with galvanic cells and chemical reactions
- Knowledge of electrical circuits and resistance
- Basic principles of electron flow and ion migration in chemical cells
NEXT STEPS
- Research the principles of galvanic action and oxidation reactions in batteries
- Learn about the differences between EMF and potential difference in electrical circuits
- Explore the mechanisms of charging and discharging in secondary cells
- Investigate the role of ions in chemical cells versus free electrons in conductive materials
USEFUL FOR
Electrical engineers, physics students, battery technology researchers, and anyone interested in understanding the principles of electromotive force and battery operation.