How To Find Equivalent Resistance Of A Parallel Circuit

By | January 23, 2023



Searching for the equivalent resistance of a parallel circuit can seem intimidating, especially if you don’t know what you’re doing. But with the right knowledge, finding the answer isn’t as bad as it seems! Whether you’re a beginner or just need a refresher, we’ve got you covered.

First off, let’s start with the basics. In physics, electric current follows the path of least resistance and divides when two components in a series are connected in parallel, creating multiple paths of current flow. This means that the total resistance of a parallel circuit is less than the individual resistances. To calculate the equivalent resistance, you have to use Ohm’s Law which states that voltage equals current times resistance.

To get the equivalent resistance of a parallel circuit, you will need to find the reciprocal of each of the resistances and add them together. For example, if the circuit has three resistors in parallel, each with a resistance of 8 ohms, the equivalent resistance would be 1/8 + 1/8 + 1/8, which equals .375 ohms. To make it easier to calculate, you can also use the formula Rtotal = 1/R1 + 1/R2 + 1/R3 +....

In addition to using Ohm’s Law and the formula, there are also online calculators available to help you find the equivalent resistance of a parallel circuit. All you have to do is input the resistances, click the “Calculate” button, and voila - the result will be displayed along with the visual representation of the circuit.

Armed with this information, you should now be able to find the equivalent resistance of a parallel circuit with no problem. So go ahead, take what you’ve just learned and apply it to your next project! Just remember to practice safety when dealing with any kind of electricity.


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