Three-way Switch or How To Turn a Light On or Off From Either End of A Long Hallway Regardless Of The Position Of The Other Switch.

An interactive switch, battery and lamp circuit built in the DCACLab online simulator by Sam Watson. Open it to run the simulation and measure it.

Open in the lab Embed Run the circuit right here. To edit it in the full lab, sign in; free accounts have a time limit there.

用电路教学吗？

创建班级，给学生布置要搭建的电路，并查看他们提交的作业。可免费试用：1 个班级，最多 5 名学生。

免费试用班级演示

What's inside

1× Battery (1 V)
2× Switch
1× Lamp

About

By Sam Watson
Saved December 24, 2014 · updated January 15, 2026
7,661 views
Page: dcaclab.com/circuits/10220-three-way-switch-or-how-to-turn-a-light-on-or-off-from-either-end-of-a-long-hallway-regardless-of-the-position-of-the-other-switch

Embed this circuit

<iframe src="https://dcaclab.com/experiments/10220-three-way-switch-or-how-to-turn-a-light-on-or-off-from-either-end-of-a-long-hallway-regardless-of-the-position-of-the-other-switch/iframe" width="560" height="410" frameborder="0"></iframe>

Cite: Watson, S. (2014). Three-way Switch or How To Turn a Light On or Off From Either End of A Long Hallway Regardless Of The Position Of The Other Switch. DCACLab. https://dcaclab.com/circuits/10220-three-way-switch-or-how-to-turn-a-light-on-or-off-from-either-end-of-a-long-hallway-regardless-of-the-position-of-the-other-switch