What is the advantage of using series vs parallel circuit or vice versa in a technical way?
Parallel circuits enable devices to operate independently of each other. Each path gets the full voltage of the power source. If one device is removed, the others continue to operate. Example: a car with that “one-eye syndrome”, where you can still use one headlight even though the other is broken. Series circuits enable us to power devices meant for a low voltage input, when only a high voltage power supply exists, and we don’t want to waste excess energy in resistive voltage dividers. Examples are the tiny bulbs in Christmas light strings, which frustrate us when one light goes out and they all go out. We use the series circuit and put up with this disadvantage, because the bulbs are small, and to power them in parallel would burn way too much energy.