What electrical parameter is controlled by a potentiometer?

What electrical parameter is controlled by a potentiometer?

• A. Voltage
• B. Capacitance
• C. Current
• D. Resistance

Answer: (D)

A potentiometer is a variable resistor that is designed to adjust voltage within a circuit. When you turn the knob or slide the control of a potentiometer, you are changing the resistance in the path of the electrical current. This adjustment, in turn, alters the voltage drop across the potentiometer according to Ohm’s law, where voltage is equal to the product of current and resistance (V=IR). In practice, this means that the potentiometer provides a way to fine-tune the voltage to a desired level without having to change components. The main function of a potentiometer is to vary the resistance within a circuit, which is critical for applications such as volume control in audio devices and as a part of sensor calibration in various electronic circuits.

A potentiometer is a variable resistor that is designed to adjust voltage within a circuit. When you turn the knob or slide the control of a potentiometer, you are changing the resistance in the path of the electrical current. This adjustment, in turn, alters the voltage drop across the potentiometer according to Ohm’s law, where voltage is equal to the product of current and resistance (V=IR).

In practice, this means that the potentiometer provides a way to fine-tune the voltage to a desired level without having to change components. The main function of a potentiometer is to vary the resistance within a circuit, which is critical for applications such as volume control in audio devices and as a part of sensor calibration in various electronic circuits.