Definition

1. Noun:
   • An electrical device characterized by its capacity to store an electric charge: A component, typically a capacitor, designed to hold electrical energy in an electrostatic field.
   • An electrical phenomenon whereby an electric charge is stored: The physical property of a system that allows it to store an electric charge when a voltage difference is applied across it.

Usage

• As a property (phenomenon): "Capacitance" is a fundamental electrical property measured in farads (F). It describes how much charge a system can store per unit of voltage.
• As a component specification: The term specifies the storage capability of a capacitor, an electrical device.

Examples

• Describing a property:
  • The capacitance of the parallel plates increases with a larger surface area.
  • Understanding the circuit's total capacitance is crucial for its design.
• Referring to a device's characteristic:
  • This capacitor has a capacitance of 10 microfarads.
  • Check the component's rated capacitance before installing it.

Advanced Usage

• "Parasitic capacitance": Unwanted or stray capacitance that exists between conductors in a circuit, often affecting high-frequency performance.
  • Parasitic capacitance can cause signal delays in the microprocessor.
• "Capacitance coupling": A method of transferring energy between circuits using the capacitive effect.
  • The signal was transmitted through capacitance coupling.

Variants and Related Words

• Capacitor (n): The physical electrical device that provides capacitance.
  • He replaced the faulty capacitor on the circuit board.
• Capacitive (adj): Relating to or characterized by capacitance.
  • The touchscreen uses a capacitive sensing technology.

Synonyms

• Charge storage capacity (descriptive synonym for the phenomenon).
• Capacitive reactance is a related but distinct concept (the opposition to alternating current due to capacitance).

Related Phrases and Technical Terms

• "Capacitance to ground": The capacitance between a conductor and the earth or a ground plane.
  • The long wire had significant capacitance to ground, affecting the signal.
• "Self-capacitance": The capacitance of an isolated, conductive object relative to its surroundings.
  • The antenna's performance depends on its self-capacitance.

Noun

1. an electrical device characterized by its capacity to store an electric charge
2. an electrical phenomenon whereby an electric charge is stored