Press 'Clear Total' to reset.Ģ Resistors in Parallel - Calculate One Resistor from Other and Total:Įnter R1 and the total resistance to calculate the value of the other resistor needed to produce the required total. Resistors in Parallel - Calculate Total: Enter resistance, press 'Add to Total', repeat.
PARALLEL RESISTANCE CALCULATOR SERIES
Resistors in Series - Calculate Total: Enter resistance, press 'Add to Total', repeat. Preferred resistor values areĪlso calculated, use the radio buttons on each calculator to select the preferred value series to use. Given resistor value to produce a specified total. The third calculator will find a resistor value to place in parallel with a You can also use this tool to find out what resistor to add to a parallel circuit to arrive at a desired equivalent resistance. Press 'Clear Total' to start a new calculation. This parallel resistor calculator will help you determine the total resistance parallel resistors make in a circuit, also known as their equivalent resistance. In general, if n resistances are connected in. Repeat untilĪll resistors have been entered. The net resistance of this parallel circuit is 1/Rnet 1 / R 1 / R1 + 1 / R2 + 1 / R3.
Enter the resistor value and press 'Add to Total'. Why is this form so commonly presented? I suspect it is used for pedagogical reasons to help students understand the underlying concepts, but unsure.The first two calculators below calculate series or parallelĬombinations of resistors. The total resistance of a parallel circuit is calculated by using Ohms law on the voltage and current of the whole circuit.
Consequently, it's very easy to overlook the final inverse operation. This Parallel and Series Resistor Calculator enables you to add resistors up to 10. Therefore, you can use it to calculate the total resistance for resistor parallel circuit and resistor series circuit resistance. You rarely see other formulas expressed as a non-isolated variable in an equation. Series/Parallel Resistor Calculator - Series/Parallel Resistor Calculator is a combination of Series circuit calculator and Resistor Parallel Calculator.
PARALLEL RESISTANCE CALCULATOR HOW TO
I felt incredibly dumb when I watched a video on how to calculate parallel resistance and realized I forgot to take the final inverse after summing all the terms:įor example, suppose we have a parallel circuit with resistors ofģ0 Ohms, 60 Ohms, 20 Ohms and 10 Ohms. Solution: We have, R 1 2 R 2 1 R 3 3 Using the formula we get, 1/R eq 1/R 1 + 1/R 2 + 1/R 3 1/R eq 1/2 + 1/1 + 1/3 1/R eq 1/0.55 R eq 0.55 Problem 3. This parallel resistor calculator is a tool for determining the equivalent resistance of a circuit with up to ten resistors in parallel. I was calculating the parallel resistance for a circuit, but just couldn't get the correct answer despite several attempts. Calculate the equivalent resistance if three resistances of 2, 1 and 3 are connected in parallel. Parallel Resistor Calculator Calculate the total resistance in ohms of resistors that are in parallel by entering the value of each below.
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