what is relationship between e.m.f and terminal voltage of cell
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V = E - Ir
Where,
V = Terminal Voltage -> This is the voltage of a cell across a circuit when the circuit is closed.
E = EMF -> This is the maximum potential of the circuit.
I = Current through the circuit
r = Internal resistance of the cell.
E is always greater than V because when V is measured, there is a potential drop across the cell which lowers V, which is not accounted by E. That is why V is measured by voltmeter, and E is measured using a potentiometer.
Where,
V = Terminal Voltage -> This is the voltage of a cell across a circuit when the circuit is closed.
E = EMF -> This is the maximum potential of the circuit.
I = Current through the circuit
r = Internal resistance of the cell.
E is always greater than V because when V is measured, there is a potential drop across the cell which lowers V, which is not accounted by E. That is why V is measured by voltmeter, and E is measured using a potentiometer.
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10???
no im 11th
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when the ends of the conductor are connected to the terminal of battery the electrons in conductor move with a drift speed from negative terminal to positive terminal because electric force acting on them
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