Current is a measure of how much electric charge ... with a lamp When two components are connected in parallel, you cannot follow the circuit through both components from one side to the other ...

Save guides, add subjects and pick up where you left off with your BBC account. A parallel circuit is way of connecting components on separate branches, so the current can take different routes ...

What do series and parallel circuits have to do with Christmas ... So, you need a device that can measure current, in series with another component, without changing the current.