SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/ham-series-same-current

In which type of circuit is the current always the same through all components?

A series circuit, where there is only one path for current.

  1. Parallel
  2. Series ✔
  3. Resonant

Why: In a series circuit, parts are connected one after another, so the same current must pass through each one. In a parallel circuit, the voltage is the same instead.

Huh, didn't know that: Old-style Christmas light strings were wired in series, so one dead bulb made the whole string go dark.

The dad joke
Why did the series circuit love binge-watching? It always wanted to see what came next.
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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

Test yourself in the game

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