Stop walking across a dark room to turn on the light. Install a 3-way switch and control lights from two locations.

This circuit diagram joins a cell, a switch and two bulbs. Click on the next slide to see what the circuit might look like if you built it. Image caption, This shows what the previous circuit ...

This circuit and circuit diagram contain a cell and two lamps ... continues to flow along remaining paths in the circuit. Switches can be added to a parallel circuit to turn components on and ...