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leojun
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is it really ok to assume that internal resistance of a cell is absent in a circuit
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leojun said:is it really ok to assume that internal resistance of a cell is absent in a circuit
No, it is physically impossible for the internal resistance of a cell to be exactly 0. All materials have some degree of resistance, including the electrolyte materials used in batteries.
The internal resistance of a cell can be affected by various factors such as the type of materials used in the electrodes and electrolyte, the temperature, and the age and condition of the cell.
In many cases, the internal resistance of a cell is small enough to be negligible in calculations and experiments. This approximation simplifies the analysis and allows for easier understanding of the behavior of the cell.
The internal resistance of a cell can be measured by using a multimeter to measure the voltage drop across a known resistor connected in series with the cell. The internal resistance can then be calculated using Ohm's Law.
Yes, the internal resistance of a cell can affect its performance by causing a voltage drop and reducing the amount of usable energy that can be extracted from the cell. It can also affect the cell's ability to provide a consistent output of power.