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Which part's schematic symbol looks like a small rounded bulb with a loop inside?

Lamp.

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  1. Lamp ✔
  2. Resistor
  3. Transistor

Why: A rounded bulb outline with a filament loop inside is the symbol for a lamp. On the exam, it is component 3 in Figure T-1.

Huh, didn't know that: An indicator lamp turns electrical energy into light and heat.

The dad joke
Why did the lamp symbol do so well in school? It was really bright.
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References

Answer: Lamp. A rounded bulb outline with a filament loop inside is the symbol for a lamp. On the exam, it is component 3 in Figure T-1.

  1. NCVEC 2026-2030 Technician Question Pool, T6C04 ncvec.org/downloads/2026-2030%20Technician%20Pool%20and%20Syllabus%20Public%20Release%20Feb%2019%202026.pdf
    C. Lamp
    Checked 2026-10-09.

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