Difference between Series and Parallel Circuits | Electrical Engineering Facts

People walking one behind the other in a long chain are walking in Series. People walking side by side across a broad front are walking in Parallel. The same terminology applies to whatever it is that you are connecting up. You don’t say what context you are in.

Series Circuit 

1. Only ONE path for current to flow in a closed circuit
2. Current remains the SAME in all parts of the circuit
3. Voltage is DIFFERENT from each component
4. total power supplied is the sum of powers consumed in each circuit components like P_Total=P_1+P_2+…

 Parallel Circuit 

1. Current is DIFFERENT through each component of the circuit (according to their resistance values)
2. Voltage remains the same across each component of the circuit
3. total power supplied is the sum of powers consumed in each circuit components like P_Total=P_1+P_2+…

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Source: https://www.quora.com/What-is-the-difference-between-a-series-circuit-and-a-parallel-circuit