Practical electrical and electronic circuits
Series circuits
This is a series circuit.
In a A circuit where one component follows directly from another, eg three bulbs in a row with no junctions are said to be connected in series. circuit there is only one path for the Moving electric charges, eg electrons moving through a metal wire. and the current is the same at all points.
Current in series circuits
We measure current using an A device used to measure electric current..
An ammeter must be connected in series with other components in a circuit. This means we need to break into the circuit when we add an ammeter.
The current in a series A closed loop through which current moves - from a power source, through a series of components, and back into the power source. is the same at all places in the circuit.
We can write this current relationship as:
\({I_s} = {I_1} = {I_2} = {I_3} = ...\)
Question
Look at the series circuit below - what is the reading at?
Position one: more than 0.1A, 0.1A or less than 0.1A
Position two: more than 0.1A, 0.1A or less than 0.1A
Position three: more than 0.1A, 0.1A or less than 0.1A
Position 1 = 0.1A
Position 2 = 0.1A
Position 3 = 0.1A
Remember that the charge moves all the way around the circuit.