self-induction: meaning, definition, pronunciation and examples
C1Formal, Technical (Physics, Electrical Engineering)
Quick answer
What does “self-induction” mean?
The induction of an electromotive force (voltage) in a circuit due to a change in the circuit's own electric current.
Audio
Pronunciation
Definition
Meaning and Definition
The induction of an electromotive force (voltage) in a circuit due to a change in the circuit's own electric current.
The property of an electric circuit whereby a change in the current induces a voltage in that same circuit, opposing the change in current (Lenz's law). This electromagnetic inertia is measured in henries (H).
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. The hyphen is standard in both varieties.
Connotations
Neutral technical term in both varieties.
Frequency
Equally low-frequency and specialized in both dialects.
Grammar
How to Use “self-induction” in a Sentence
the self-induction of a coilself-induction in a circuitto counteract/produce/oppose by self-inductionVocabulary
Collocations
Examples
Examples of “self-induction” in a Sentence
adjective
British English
- The self-induction effect was significant in the large coil.
- We need to account for self-induction properties.
American English
- The self-induction effect was significant in the large solenoid.
- We need to account for self-induction properties.
Usage
Meaning in Context
Business
Not used.
Academic
Primary usage context. Found in physics and electrical engineering textbooks and papers describing electromagnetic theory and circuit analysis.
Everyday
Extremely rare. Would only appear in highly specific explanations of electronics.
Technical
Core usage. Used by engineers and technicians when designing circuits, especially those involving coils, solenoids, or transformers, to manage voltage spikes.
Vocabulary
Synonyms of “self-induction”
Strong
Weak
Vocabulary
Antonyms of “self-induction”
Watch out
Common Mistakes When Using “self-induction”
- Using 'self-induction' to mean 'self-motivation' or personal development (semantic error).
- Confusing 'self-induction' with 'mutual induction' (induction between two circuits).
- Using it as a verb (e.g., 'The circuit self-inducts'). The related verb is 'to induce', but 'self-induction' is a noun.
- Misspelling as 'self-induction' (correct), 'self induction' (sometimes accepted), or 'selfinduction' (incorrect).
FAQ
Frequently Asked Questions
Self-induction is the physical phenomenon or process where a changing current in a circuit induces a voltage in that same circuit. Inductance (specifically self-inductance, denoted L) is the quantitative measure of that property, with the unit Henry (H).
It depends on the application. It is essential for the operation of transformers, inductors, and chokes. However, it can cause problematic voltage spikes (back EMF) in relay or motor circuits when switched off, requiring protective components like diodes.
Yes, but the effect is extremely small. Self-induction is significantly amplified by coiling the wire into a solenoid or coil, which concentrates the magnetic flux.
Lenz's Law gives the direction of the induced electromotive force (emf): it will always oppose the change in current that produced it. Self-induction is the manifestation of this law within a single circuit, creating a 'back emf'.
The induction of an electromotive force (voltage) in a circuit due to a change in the circuit's own electric current.
Self-induction is usually formal, technical (physics, electrical engineering) in register.
Self-induction: in British English it is pronounced /ˌself.ɪnˈdʌk.ʃən/, and in American English it is pronounced /ˌself.ɪnˈdʌk.ʃən/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think of a **SELF-ish coil**: when its OWN current changes, it INDUCES a voltage in ITSELF to oppose the change (like inertia). Self + induction = induction in itself.
Conceptual Metaphor
ELECTROMAGNETIC INERTIA: A circuit's current resists change, analogous to how a massive object resists changes in its velocity.
Practice
Quiz
What unit is used to measure the property quantitatively associated with self-induction?