How is the potential difference maintained across the ends of a conductor
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Constant potential difference can be maintained across a conductor by following devises
1)battery
2)cell
3)power supply, etc
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A battery or a dry cell is connected across the ends of a conductor to maintain the potential difference. Chemical reactions between the electrodes and electrolytes maintain the potential difference in a cell or battery. The work involved in transporting a unit of positive electric charge from one point to another is known as potential difference.
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