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SESK: Stuff Everyone Should Know · sesk.info/ham-inductor-magnetic-field

What type of electrical component stores energy in a magnetic field?

An inductor, usually a coil of wire.

  1. Capacitor
  2. Inductor ✔
  3. Diode

Why: When current flows through an inductor, usually a coil of wire, it builds a magnetic field that stores energy. Capacitors use an electric field instead.

Huh, didn't know that: Inductance is measured in henrys, named after American scientist Joseph Henry.

The dad joke
Why did the inductor get a job at the circus? It was great with coils and loops.
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Sources

  1. NCVEC 2026-2030 Technician Question Pool (Feb 19, 2026 release) https://www.ncvec.org/downloads/2026-2030%20Technician%20Pool%20and%20Syllabus%20Public%20Release%20Feb%2019%202026.pdf

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