Exercises: Series Circuits

Work through each section in order. Show all steps: find R_eq, then I, then each voltage drop, then verify with KVL.

Grade 11·21 problems·~30 min·OpenStax Physics (High School)·section·sec-19-2

Work through problems with immediate feedback

Recall / Warm-Up

In a series string of five holiday lights, one bulb burns out (its filament breaks, creating an open circuit). What happens to the other four bulbs?

All four go out — the open circuit breaks the single current path.

The other four get brighter — less resistance means more current.

The other four stay on — the current finds a path around the broken bulb.

Only the bulbs after the broken one go out.