A circuit is a closed loop that allows electrons to travel from a power source, through various components, and back to the source. If the loop is broken, electricity stops flowing instantly. Series vs. Parallel Circuits
Every complex electronic device, from a simple flashlight to a modern smartphone, is built using a combination of basic components. Here is what you need to know about them: electronics demystified pdf
Do you have a in mind (e.g., repairing an appliance, coding an Arduino)? A circuit is a closed loop that allows