Electrical circuits are made up of both these kind of circuits but there is difference between series and parallel circuits. An electric circuits consists of many instruments attached to it such as resistors, diodes and switches which are positioned in a circuit structurally. And with these structure of placement there is a difference in output.
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Difference Between Series and Parallel Circuits
The major difference is that the series circuit have the same amount of current flow through all the components placed in it. It got its name due to the components are placed in the same single path of the flow of current in electric circuit. On the other hand, in parallel circuits the components are placed in parallel with each other. This circuit splits the current flow. The current flowing from the source will be divided into the current flowing through each of this components.
Difference Between Series and Parallel Circuits 


Series 
Parallel 
Same amount of current flows through all the components 
The current flowing through each components combine to form the current flow through the source. 
In an electrical circuit, components are arranged in a line 
In an electrical circuit, components are arranged parallel with each other 
When resistors are put in a circuit, the voltage across each resistor is different even though the current flow is same through all of them. 
When resistors are put in this circuit, the voltage across each of the resistors is same. And even the polarities are same 
If one component breaks down, the whole circuit will burn out. 
Other components will function even if one components breaks down, each have their own independent circuit 
If \(V_{t}\) it total voltage then it is equal to V1+V2+V3 
If \(V_{t}\) it total voltage then it is equal to V1=V2=V3 
These were some difference between series and parallel circuits. If you wish to find out more, download BYJU’S The Learning App.