voltage

/'voultidʤ/
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voltage

A technician measures the voltage across a battery with a multimeter.

Definition
  1. Noun:
    • The difference in electrical charge between two points in a circuit, expressed in volts: This is the potential energy per unit charge that drives electric current.
    • The electromotive force or potential difference expressed in volts: It is the "pressure" that pushes electrical current through a conductor.
Examples of Usage
  • Noun:
    • The standard voltage for household outlets in many countries is 230 volts.
    • A multimeter is used to measure the voltage across the battery terminals.
    • High voltage power lines are dangerous and must be handled with extreme care.
Advanced Usage
  • "To apply a voltage": To connect a source of electrical potential difference to a circuit or component.
    • You must apply the correct voltage to the motor for it to operate safely.
  • "Voltage drop": The reduction in voltage between two points in a circuit, often due to resistance.
    • The long cable caused a significant voltage drop, making the light dim.
Variants and Related Words
  • Volt (n): The SI unit of electrical potential difference and electromotive force.
    • One volt is defined as one joule of energy per coulomb of charge.
  • Potential Difference (n): A more general term for the work needed to move a charge between two points, synonymous with voltage in many contexts.
  • Electromotive Force (EMF) (n): The voltage generated by a source like a battery or generator.
Synonyms
  • Electrical potential
  • Potential difference
  • EMF (Electromotive Force)
Related Phrases
  • High voltage: A term for electrical potential that is strong enough to pose a severe hazard.
    • Warning: High voltage. Keep out.
  • Low voltage: A term for electrical potential that is relatively safe and used for controls or small devices.
    • The garden lights run on a low voltage system.
  • Voltage regulator: A device that maintains a constant voltage level.
    • The computer's power supply contains a voltage regulator.
voltage

A technician measures the voltage across a battery with a multimeter.

Noun
  1. the difference in electrical charge between two points in a circuit expressed in volts
  2. the rate at which energy is drawn from a source that produces a flow of electricity in a circuit; expressed in volts

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