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Advantages of alkaline accumulators over lead-acid accumulators

Physics

CELLS AND SIMPLE CIRCUITS

Introduction Work done per unit charge is called electrical potential. Current is the flow of charge. For current to be continuous, potential difference between the two points must be sustained.   Sources of continuous currents. In this process work is continuously done in moving electrons against a repulsive force. A device in which the potential difference is sustained is called a cell . A cell is a source of continuous current. The end of a cell with a higher potential (fewer electrons)is called the positive terminal while the end with lower potential (higher electrons) is called the negative terminal.   Chemical sources A good example is the electrochemical cell where simultaneous oxidation-reduction process occurs between the electrolyte and the electrodes. An external circuit is used to transfer the electrons. Examples of electro chemical cells are the primary cells i.e. the dry cell and Daniel cell.   The reactants must be… Read More »CELLS AND SIMPLE CIRCUITS

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