potentiometer

A noun referring to an electrical component used to measure electromotive force or to adjust voltage levels in electronic devices, such as radios and televisions.

• 🇨🇳名词，指一种用于测量电动势或调节电子设备（如收音机、电视机）中电压电平的电气元件。

1. Electrical measuring instrument C1 formal technical

   An instrument used to measure an unknown voltage or potential difference by comparing it with a known reference voltage.

   • The technician used a potentiometer to calibrate the circuit.
   • Potentiometers are essential for precise voltage measurements in labs.
   • He adjusted the potentiometer to find the exact electromotive force.

   🇨🇳电位差计

2. Adjustable resistor B2 formal technical

   A three-terminal resistor with a sliding or rotating contact that forms an adjustable voltage divider, commonly used to control volume or other settings in electronic devices.

   • The volume knob on the radio is connected to a potentiometer.
   • You can adjust the brightness of the screen using a potentiometer.
   • The engineer replaced the faulty potentiometer in the amplifier.

   🇨🇳电位器

   同义词: potrheostatvariable resistor

• potentiometers plural form
• potentiometers' possessive plural form
• potentiometer's possessive singular form