the basic difference between series and parallel circuits is that Parallel circuits are often used in everyday life without us realizing it; for instance, when we walk through a room with many light bulbs all plugged into one socket. When electricity flows through these bulbs, they turn on simultaneously. This is because there are multiple paths for the current to flow-a circuit can branch off to other parts of an area (like if you plug your phone charger into an outlet that already has another device plugged in). Series circuits work differently.
if one part of the circuit goes out or stops working, then no power reaches the rest of the components attached to it. For example, if two light bulbs were hooked up in series and one went out.