magnetic induction

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magnetic induction

A student observes magnetic induction by bringing a bar magnet near a coil connected to a galvanometer.

Definition
  1. Noun (Physics):
    • The amount of magnetic flux in a unit area perpendicular to the direction of magnetic flow: This is a quantitative measure of the strength of a magnetic field, also commonly called magnetic flux density.
    • The process that makes a substance magnetic (temporarily or permanently): This refers to the phenomenon where a material becomes magnetized when placed within an external magnetic field.
Usage Examples

  • Noun (Flux Density):

    • The device measures the magnetic induction inside the coil.
    • A high magnetic induction is required for the experiment to work.

  • Noun (Process of Magnetization):

    • The magnetic induction of the iron rod was achieved by placing it near a strong magnet.
    • This material is known for its ease of magnetic induction.
Advanced Usage
  • "Magnetic induction" is a core concept in electromagnetism. The first meaning (flux density) is a vector quantity, symbolized by B, and its SI unit is the tesla (T).
  • In engineering contexts, magnetic induction often specifically refers to the process of inducing an electromotive force (EMF) in a conductor by changing the magnetic field around it, which is the principle behind electric generators and transformers.
Variants and Related Words
  • Induction (n): The general process of causing something to happen without direct contact. In electromagnetism, it often refers to electromagnetic induction.
  • Magnetization (n): The process or result of making a material magnetic, closely related to the second meaning of magnetic induction.
  • Magnetic flux density (n): A direct synonym for the first meaning of magnetic induction.
  • Electromagnetic induction (n): The production of an electromotive force across an electrical conductor in a changing magnetic field.
Synonyms
  • Magnetic flux density (for the first meaning).
  • Magnetization (for the second meaning, specifically the result).
  • Magnetic B-field (technical synonym for the first meaning).
Related Phrases
  • Law of magnetic induction: Often refers to Faraday's law of electromagnetic induction, which quantifies how a changing magnetic field induces an electric voltage.
    • Faraday's law of magnetic induction is fundamental to electrical power generation.
  • Induced magnetism: The magnetism created in a material due to magnetic induction.
    • The induced magnetism was temporary, fading after the external field was removed.
magnetic induction

A student observes magnetic induction by bringing a bar magnet near a coil connected to a galvanometer.

Noun
  1. the amount of magnetic flux in a unit area perpendicular to the direction of magnetic flow
  2. the process that makes a substance magnetic (temporarily or permanently)

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