are christmas lights series or parallel

Christmas lights can be wired in either series or parallel. A series circuit is one in which the current flows in a single pathway. A parallel circuit is one in which the current can flow through multiple pathways. This is why you can have multiple sets of Christmas lights plugged into a single outlet. Each set of lights is wired in parallel, allowing the current to flow through each set of lights separately. This allows for a brighter and more even distribution of light, without overloading the circuit.