so a series circuit has components arranged one after the other along the same route. There’s only one path for the current to follow. This simple circuit is like a one-bulb version of my fairy ...

It's a simple string of miniature light bulbs ... The machine makes string lights in a series circuit. In a series circuit, the current passes from the power source to the first light, then ...

Because, unlike a simple string of lights in a series circuit, these are all arranged in a parallel circuit. And you can think of a parallel circuit as having several different routes that all run ...