Series and Parallel Circuits

In a parallel circuit, everything is connected across the same 2 points on the circuit, which allows the circuit to have multiple paths for electricity to flow. Each device operates independently, so if one goes out, the others will still work. This is similar to how a logic OR gate works.

In a series circuit, all the different parts of the circuit or connected with one another in a single path. Electricity can only flow throughout the whole circuit if the switch is on and all devices are working so if one of the parts fails, the whole circuits stops. This is similar to how a logic AND gate works.