Inductance Calculator
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The phenomenon of electromagnetic induction was discovered by Michael Faraday in 1831. The concept of inductance was later formalized by James Clerk Maxwell and Joseph Henry, leading to the development of modern electromagnetic theory and the design of inductors as fundamental electronic components.
Inductance is a property of an electrical conductor by which a change in current induces an electromotive force (EMF). It is measured in henries (H) and represents how much magnetic energy is stored for a given current. The larger the inductance, the more the inductor opposes changes in current.
Several factors influence inductance: • Number of turns in the coil • Coil diameter and length • Core material (air vs. ferromagnetic) • Turn spacing and wire gauge • Presence of nearby conductors
Inductors are used in many applications: • Power supplies and filters • RF circuits and tuners • Motor windings • Transformers • Chokes for noise suppression • Energy storage in switching circuits
In AC circuits, inductors: • Create impedance proportional to frequency • Cause current to lag voltage by 90° • Store energy in magnetic fields • Can resonate with capacitors • Help filter out high frequencies