Series Circuits: What are they? (Explained) | Resistors in Series | Electrical4U

A SIMPLE explanation of Series Circuits. Understand what parallel circuits are and how to calculate the equivalent resistance of a series circuit. To learn more about series and parallel circuits, check out our article at: https://www.electrical4u.com/electrical-dc-series-and-parallel-circuit/ An electrical circuit is a combination of two or more electrical components which are interconnected by conducting paths. The components may be active or inactive or both. This is a very basic definition of an electrical circuit. When all the resistive components of a DC circuit are connected end to end to form a single path for flowing current, then the circuit is referred to as series DC circuit. The manner of connecting components end to end is known as a series connection. Suppose we have n number of resistors R1, R2, R3………… Rn and they are connected in the end to end manner, means they are series-connected. If this series combination is connected across a voltage source, the current starts flowing through that single path. As the resistors are connected in the end to end manner, the current first enters into R1, then this same current comes in R2, then R3 and at last it reaches Rn from which the current enters into the negative terminals of the voltage source. In this way, the same current circulates through every resistor connected in series. Hence, it can be concluded that in a series DC circuit, the same current flows through all parts of the electrical circuit. Again according to Ohm’s law, the voltage drop across a resistor is the product of its electrical resistance and the current flow through it. Here, the current through every resistor is the same, hence the voltage drop across each resistor’s proportional to its electrical resistance value. If the resistances of the resistors are not equal then the voltage drop across them would also not be equal. Thus, every resistor has its individual voltage drop in a series DC circuit. Comment below with any additional questions you have. If you enjoyed this video from Electrical4U and want to see more like it, please LIKE and SUBSCRIBE to our Youtube channel.