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.

To measure the current flowing through a component in a circuit, you must connect the ammeter in series with it. Remember, electric current is measured in amperes, or amps for short.

Figure 1: Single-molecule circuits containing one and two conducting backbones connected in parallel. Table 1 Calculated and measured single-molecule conductance for pairs of molecules with a ...