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Inductance: meaning, definitions and examples

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inductance

 

[ ɪnˈdʌk.təns ]

Noun
Context #1 | Noun

electrical engineering

Inductance is a property of an electrical circuit or component that causes it to oppose changes in current. This property is measured in henries (H) and is crucial in the functioning of inductors and transformers. Inductance arises from the magnetic field generated by electric current, where a change in current leads to a change in magnetic field, inducing voltage. The greater the inductance, the more a component resists any change in current flow. Understanding inductance is essential for designing circuits that involve alternating current (AC) and in applications where inductive reactance plays a role.

Synonyms

coil, magnetomotive force, reactance.

Examples of usage

  • The inductor's inductance determines its ability to store energy.
  • In a circuit with high inductance, the current lags behind the voltage.
  • Inductance affects the performance of transformers.
  • Engineers often calculate inductance when designing coils.

Etymology

The term 'inductance' was first introduced by physicist Joseph Henry in the 1830s, who also conducted groundbreaking experiments with electromagnetism. The word is derived from the Latin 'inducere', meaning 'to lead in' or 'to bring in', indicating how a changing magnetic field can lead to voltage changes in a conductor. The concept became foundational in the field of electrical engineering and physics, especially with the development of AC electricity and circuit theory in the late 19th and early 20th centuries. By the early 20th century, inductance became a standard measure in electrical engineering, laying the groundwork for modern electrical systems and technologies.

Word Frequency Rank

At position #13,818, this word is part of sophisticated English vocabulary. It's useful for academic or professional contexts where precise language is needed.