In circuits connected in parallel, the components are connected on different branches. Find out more with BBC Bitesize. For students between the ages of 11 and 14.

A very simple but highly efficient combination lock circuit is shown in the figure. ... the switches designated as "Failure" are used in parallel (S1, S4, S6, and S7).

However, this is a great time to look at the difference between series and parallel circuits. A Simple Circuit Just about the simplest circuit you can create uses just one battery and one light bulb.