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Standard cell
Standard Cell A standard cell , also known as a voltaic cell , is a device that can generate a constant voltage regardless of the current flowing t...
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Standard Cell A standard cell , also known as a voltaic cell , is a device that can generate a constant voltage regardless of the current flowing t...
A standard cell, also known as a voltaic cell, is a device that can generate a constant voltage regardless of the current flowing through it. This means that the cell's output voltage is independent of the cell's internal resistance.
Think of it as a battery with a built-in voltage source. The internal resistance of the cell, which determines the flow of current, essentially acts as a constant load for the voltage source. This allows the cell to maintain a constant output regardless of the external circuit connected to it.
Key characteristics of a standard cell:
It has a fixed voltage regardless of the current flowing through it.
It acts as a voltage source with a constant output voltage.
It is used in various electronic circuits as a reference voltage source to maintain a consistent voltage level.
Example:
Imagine a circuit with a battery connected to a lamp. The battery's internal resistance acts like a variable resistor that adjusts the current flowing through the circuit. The standard cell is connected in this circuit, with its fixed voltage providing the constant voltage source. The lamp will light up at a constant brightness regardless of the battery's internal resistance, thanks to the standard cell's voltage being independent of the resistance