Learn / Circuits / Base / Parallel circuit: light and buzzer at once
BASE
BEGINNER
Ages 8+
4:12
Parallel circuit: light and buzzer at once
Two outputs, two branches, one battery. Unplug the light and the buzzer keeps going — that's what parallel means, and it's why your house doesn't go dark when one bulb blows.
VIDEO · exercise walkthrough · chapters: parts · build · test · why
Blocks you need
Battery · LED · Buzzer · Switch · 4 wires
You'll understand
Parallel vs seriesBranchesShared voltageWhy one failure doesn't kill the rest
Steps
1Connect the battery block to a wire on each side.
2Snap the LED across the two wires — polarity marks facing the same way.
3Add a second pair of wires from the same battery, and snap the buzzer across them.
4Put the switch in the battery line. Flip it. Then pull the LED off — does the buzzer stop?