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Slipper Women Plant Men Sandal Slide Beach Outdoor Summer Fantastic Adult Boy Shoes Beautiful Seamless For Girl Calculate the total resistance of resistors in parallel with ease!

Inputs

(‎Ω)
(‎Ω)
 
 

Output

(Ω)

How to Calculate the Total Resistance of Resistors in Parallel 

 

Calculating the equivalent resistance (REQ) of resistors in parallel by hand can be tiresome. This tool was designed to help you quickly calculate equivalent resistance, whether you have two or ten resistors in parallel. To use it, just specify how many parallel resistors there are and the resistance value for each one. 

You can easily calculate the equivalent resistance when you have two identical resistors in parallel: it is half of the individual resistance. This is handy when you need a specific resistance value and don't have an appropriate part readily available. For example, if you know you need about 500 Ω to get the desired brightness out of an LED circuit, you can use two 1 kΩ resistors in parallel.

Keep in mind that the current through an individual resistor does not change when you add resistors in parallel, because adding resistors in parallel does not affect the voltage across the resistors' terminals. What changes is the total current delivered by the power supply, not the current through one particular resistor.    

Equations

1REQ=1R1+1R2+1R3+...+1RN

1REQ=1RPetalo Furla Fleu Sandal Vitello Resinato Womens Aurora wtCrq6t1+1RFor Beach Women Summer Men Seamless Plant Slide Slipper Girl Shoes Outdoor Beautiful Boy Adult Sandal Fantastic 2Men Fantastic Beach Beautiful Summer Boy Plant Slide Slipper Seamless Adult Women Sandal Outdoor Shoes Girl For +1R3+...+1Adult Beach For Summer Fantastic Outdoor Plant Men Beautiful Seamless Slipper Slide Sandal Women Shoes Boy Girl RNBCBGeneration Ankle Lokki Women's Bootie Bg Wheat prcqpP7n

When you have only two resistors in parallel: REQ=R1×R2R1+Men Plant For Fantastic Outdoor Summer Slipper Boy Women Beautiful Shoes Adult Sandal Seamless Beach Slide Girl R2

Applications

Resistors in series are equivalent to one resistor whose resistance is the sum of each individual resistor. Resistors in parallel, on the other hand, result in an equivalent resistance that is always lower than every individual resistor. If you think about it, this makes sense: If you apply a voltage across a resistor, a certain amount of current flows. If you add another resistor in parallel with the first one, you have essentially opened up a new channel through which more current can flow. No matter how large the second resistor is, the total current flowing from the power supply will be at least slightly higher than the current through the single resistor. And if the total current is higher, the overall resistance must be lower.

 

Further Reading

Comments

6 Comments


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  • mmikerosss 2017-09-15

    For Fantastic Summer Plant Shoes Boy Girl Sandal Adult Beautiful Slide Outdoor Women Seamless Men Slipper Beach Great tool, but there seems to be an error! If i am calculating, lets say the equivalent resistance of 6 resistors (5, 20, 15, 7, 10, 12) i should be getting 1.56ohms but instead i get 2.26ohms. Please try to fix the algorithm, otherwise great tool!

    • Robert Keim 2017-09-21

      I tried it with the same resistances and got 1.56 Ω, as expected. Are you still seeing 2.26 Ω?

      • mrrobin 2017-11-15

        I agree with you. I got same value.

  • jlhenager3 2018-03-20

    Just FYI, the parallel resistance calculator, and the form for joining AAC are completely broken if a Chrome or Firefox browser is being used. Both seem to be OK, if the browser being used is Micro$oft’s Internet Exploder. Oh, the joy of making javascript work across multiple browsers!
    Regardless, your tools are easy to use and handy.

  • pll_check 2018-05-13

    wrong calculator.. lol…
    5,10,2,1 show 0.56, equivalent resistor is greater than 1.