self-inductance

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self-inductance

The physics teacher draws a diagram of self-inductance on the board.

Definition
  1. Noun:
    • A property of an electric circuit: Self-inductance is the inherent property of a circuit, especially a coil, that opposes any change in the electric current flowing through it.
    • A specific physical quantity: It is the ratio of the electromotive force (EMF) generated in a circuit by self-induction to the rate of change of the current that is causing it. Its unit of measurement is the henry (H).
Usage Examples
  • Noun:
    • The self-inductance of the solenoid determines how much it resists changes in current.
    • Calculating the self-inductance is crucial for designing efficient transformers and inductors.
    • A higher self-inductance means a greater induced voltage for a given rate of current change.
Advanced Usage
  • "Mutual inductance vs. self-inductance": Self-inductance relates to the EMF induced in a circuit by its own changing current, while mutual inductance relates to the EMF induced in one circuit by a changing current in a nearby circuit.
    • In a transformer, both the self-inductance of each coil and the mutual inductance between them are important parameters.
Variants and Related Words
  • Inductance (n): The general property of an electrical conductor by which a change in current induces an electromotive force. Self-inductance is a specific type of inductance.
  • Inductor (n): An electrical component designed to have a specific self-inductance.
  • Self-induction (n): The process or phenomenon of generating an electromotive force in a circuit by a change in the circuit's own current.
Synonyms
  • Coefficient of self-induction: A more technical term for self-inductance.
Related Concepts (Not Phrasal Verbs or Idioms)
  • Back EMF: The electromotive force generated by self-inductance, which opposes the change in current.
    • The motor's self-inductance creates a back EMF when the current is switched.
  • Energy storage: A coil's self-inductance allows it to store energy in its magnetic field.
    • The energy stored is proportional to the self-inductance and the square of the current.
self-inductance

The physics teacher draws a diagram of self-inductance on the board.

Noun
  1. the ratio of the electromotive force produced in a circuit by self-induction to the rate of change of current producing it, expressed in henries

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