Question

Terminal potential difference is less than the emf. Of a cell. Explain, why?​

Answer 1

Answer:

When a cell is in closed circuit, i.e., when current is drawn from it, then the potential difference between its electrodes is called the terminal voltage. It is always less than the e.m.f. because when charge flows in a circuit, some energy is spent in the flow of charge through the electrolyte of the cell.

Explanation:

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Answer 2

• The terminal voltage of a cell is the potential difference between its electrodes when it is in closed circuit, that is, when current is taken from it.
• When charge flows through a circuit, some energy is spent in the passage of charge through the cell's electrolyte, therefore it is always less than the e.m.f.
• Voltage, electric potential difference, electric pressure, or electric tension are all terms for the difference in electric potential between two points, which is defined as the effort required per unit of charge to move a test charge between the two spots.
• In the International System of Units, the derived unit for voltage (potential difference) is known as volt.