This article is an informative source for students to understand the definition, meaning, application and more for the Difference between Series and Parallel Circuit By Anisha Mishra Jul 16, 2024 ...

Resistors (Ω) oppose current, are color-coded, and connect in series (Rt = ΣR) or parallel. Current-limiting resistors protect LEDs.

Here is a quick demo showing the difference between bulbs in series and bulbs in parallel. Oh, and just like the lightbulbs in series you can do this with many, many bulbs. Christmas Lights ...

I also think that using several resistors in series/parallel also mitigates the affects of tolerances. The more resistors you have, the less the tolerance of each one affects the final value. Thus, ...

The E12 series uses 12 standard values (10, 12, 15, 18, 22, 27, 33, 39, 47, 56, 68, 82) for each power of ten (10Ω, 100Ω, 1000Ω (1kΩ), etc.) and is typically used for resistors with 10% ...