inductance
Sign in to saveInductance is the tendency of an electrical conductor to oppose a change in the electric current flowing through it. The electric current produces a magnetic field around the conductor. The magnetic field strength depends on the magnitude of the electric current, and therefore follows any changes in the magnitude of the current. From Faraday's law of induction, any change in magnetic field through a circuit induces an electromotive force (EMF) (voltage) in the conductors, a process known as electromagnetic induction. This induced voltage created by the changing current has the effect of opposi
AI overview
Inductance is the tendency of an electrical conductor to resist changes in the electric current flowing through it, which happens because a changing current produces a changing magnetic field that creates an opposing voltage. This property matters because it affects how electrical circuits respond to current changes, influencing everything from the behavior of power systems to the operation of electronic devices.
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Key facts
- Physical quantity.name
- Inductance
- Physical quantity.unit
- henry (H)
- Physical quantity.baseunits
- kg⋅m2⋅s−2⋅A−2
- Physical quantity.dimension
- M1·L2·T−2·I−2
via Wikipedia infobox
Article
33 sectionsContents
- History
- Source of inductance
- Self-inductance and magnetic energy
- Inductive reactance
- Calculating self-inductance
- Straight single wire
- Practical formulas
- Wire loop
- Solenoid
- Coaxial cable
- Multilayer coils
- Magnetic cores
- Mutual inductance
- Definition of Mutual induction or Coefficient of mutual induction
- Mutual inductance of two parallel straight wires
- Mutual inductance of two wire loops
- Derivation
- Derivation of mutual inductance
- Mutual inductance and magnetic field energy
- Coupling coefficient
- Matrix representation
- Multiple Coupled Inductors
- Equivalent circuits
- T-circuit
- π-circuit
- Resonant transformer
- Ideal transformers
- Self-inductance of thin wire shapes
- See also
- Footnotes
- References
- General references
- External links
Inductance is the tendency of an electrical conductor to oppose a change in the electric current flowing through it. The electric current produces a magnetic field around the conductor. The magnetic field strength depends on the magnitude of the electric current, and therefore follows any changes in the magnitude of the current. From Faraday's law of induction, any change in magnetic field through a circuit induces an electromotive force (EMF) (voltage) in the conductors, a process known as electromagnetic induction. This induced voltage created by the changing current has the effect of opposing the change in current. This is stated by Lenz's law, and the voltage is called back EMF.
Inductance is defined as the ratio of the induced voltage to the rate of change of current causing it. It is a proportionality constant that depends on the geometry of circuit conductors (e.g., cross-section area and length) and the magnetic permeability of the conductor and nearby materials. An electronic component designed to add inductance to a circuit is called an inductor. It typically consists of a coil or helix of wire.