volmeter

Definition
  1. Noun:
    • Electrical instrument: A "volmeter" is an instrument used to measure the potential difference (voltage) between two points in an electric circuit. It is typically connected in parallel to the component or section of the circuit being measured.
Usage Examples
  • Noun:
    • The technician connected the voltmeter across the battery terminals to check the voltage. (The voltmeter is placed in parallel with the battery to measure its electrical potential difference.)
    • A voltmeter is essential for diagnosing electrical faults in a circuit. (The device helps identify problems by measuring voltage levels.)
Advanced Usage

  • "to read a voltmeter": to interpret the measurement shown on the voltmeter's display or scale.

    • After adjusting the potentiometer, she read the voltmeter and noted the value. (She observed and recorded the voltage reading.)

  • "digital voltmeter": a voltmeter that displays voltage numerically on a digital screen, as opposed to an analog voltmeter with a needle and scale.

    • Modern laboratories use digital voltmeters for greater precision. (Digital voltmeters provide accurate, easy-to-read numerical values.)
Variants and Related Words

  • Volt (n): the unit of electric potential difference or electromotive force, symbol V.

    • The battery supplies 12 volts. (The battery provides a potential difference of 12 V.)

  • Voltage (n): the difference in electric potential between two points, measured in volts.

    • The voltage across the resistor is 5 volts. (The potential difference is 5 V.)

  • Voltmeter (n): alternative spelling of "volmeter" (less common, but accepted; "voltmeter" is the standard spelling in modern English).

Synonyms
  • Potential meter: a general term for an instrument that measures electrical potential difference.
  • Voltage gauge: a device that indicates voltage levels.
Related Idioms
  • "No voltmeter, no measurement": a practical saying meaning that without the proper tool, accurate assessment is impossible.
    • You can't know the circuit's condition without a voltmeter — it's no voltmeter, no measurement. (You need the correct instrument to obtain reliable data.)

Note: The word "volmeter" is a variant spelling of "voltmeter." The standard and widely accepted spelling in modern English is "voltmeter," though "volmeter" appears in some older or specialized texts. The explanation above treats "volmeter" as equivalent to "voltmeter."