Resistance Calculator

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Voltage and Current Measuring Instruments

✖Resistivity is the measure of how strongly a material opposes the flow of current through them.ⓘ Resistivity [ρ]			+10% -10%
✖Length of Conductor is the measure of length of wire.ⓘ Length of Conductor [l]			+10% -10%
✖Cross-Sectional Area is the area of a two-dimensional shape that is obtained when a three dimensional shape is sliced perpendicular to some specified axis at a point.ⓘ Cross-Sectional Area [A]			+10% -10%

✖Resistance is a measure of the opposition to current flow in an electrical circuit. Its S.I unit is ohm.ⓘ Resistance [R]

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Formula

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Resistance

Formula

`"R" = ("ρ"*"l")/"A"`

Example

`"1.092857Ω"=("0.017Ω*mm"*"0.9m")/"14mm²"`

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Resistance Solution

STEP 0: Pre-Calculation Summary

Formula Used

Resistance = (Resistivity*Length of Conductor)/Cross-Sectional Area
R = (ρ*l)/A
This formula uses 4 Variables

Variables Used

Resistance - (Measured in Ohm) - Resistance is a measure of the opposition to current flow in an electrical circuit. Its S.I unit is ohm.
Resistivity - (Measured in Ohm Meter) - Resistivity is the measure of how strongly a material opposes the flow of current through them.
Length of Conductor - (Measured in Meter) - Length of Conductor is the measure of length of wire.
Cross-Sectional Area - (Measured in Square Meter) - Cross-Sectional Area is the area of a two-dimensional shape that is obtained when a three dimensional shape is sliced perpendicular to some specified axis at a point.

STEP 1: Convert Input(s) to Base Unit

Resistivity: 0.017 Ohm Millimeter --> 1.7E-05 Ohm Meter (Check conversion here)
Length of Conductor: 0.9 Meter --> 0.9 Meter No Conversion Required
Cross-Sectional Area: 14 Square Millimeter --> 1.4E-05 Square Meter (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

R = (ρ*l)/A --> (1.7E-05*0.9)/1.4E-05

Evaluating ... ...

R = 1.09285714285714

STEP 3: Convert Result to Output's Unit

1.09285714285714 Ohm --> No Conversion Required

FINAL ANSWER

1.09285714285714 ≈ 1.092857 Ohm <-- Resistance

(Calculation completed in 00.004 seconds)

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Created by Payal Priya

Birsa Institute of Technology (BIT), Sindri

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< 8 Resistance Calculators

Temperature Dependence of Resistance

Go Resistance = Resistance at Reference Temperature*(1+Temperature Coefficient of Resistance*Change in Temperature)

Resistivity of Material

Go Resistivity = (2*[Mass-e])/(Number of Free Charge Particles per Unit Volume*[Charge-e]^2*Relaxation time)

Internal Resistance using Potentiometer

Go Resistance = (Length-Final Length)/Final Length*Final Resistance

Resistance

Go Resistance = (Resistivity*Length of Conductor)/Cross-Sectional Area

Resistance on Stretching of Wire

Go Resistance = (Final Resistance*Length^2)/((Final Length)^2)

Resistance of Wire

Go Resistance = Resistivity*Length/Cross-Sectional Area

Equivalent Resistance in Parallel

Go Equivalent Resistance = (1/Resistance+1/Final Resistance)^(-1)

Equivalent Resistance in Series

Go Equivalent Resistance = Resistance+Final Resistance

Resistance Formula

Resistance = (Resistivity*Length of Conductor)/Cross-Sectional Area
R = (ρ*l)/A

How is resistance calculated ?

The property of a substance by virtue of which it opposes the flow of electric current through it is called electrical resistance. Its formula is R= (ρ*i )/ A where R is the resistance measured in ohms, ρ is the resistivity measured in ohm-meter , l is the length of the conductor, measured in metres (m), A is the cross-sectional area of the conductor measured in square metres .

How to Calculate Resistance?

Resistance calculator uses Resistance = (Resistivity*Length of Conductor)/Cross-Sectional Area to calculate the Resistance, Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is denoted by R symbol.

How to calculate Resistance using this online calculator? To use this online calculator for Resistance, enter Resistivity (ρ), Length of Conductor (l) & Cross-Sectional Area (A) and hit the calculate button. Here is how the Resistance calculation can be explained with given input values -> 1.092857 = (1.7E-05*0.9)/1.4E-05.

FAQ

What is Resistance?

Resistance is a measure of the opposition to current flow in an electrical circuit and is represented as R = (ρ*l)/A or Resistance = (Resistivity*Length of Conductor)/Cross-Sectional Area. Resistivity is the measure of how strongly a material opposes the flow of current through them, Length of Conductor is the measure of length of wire & Cross-Sectional Area is the area of a two-dimensional shape that is obtained when a three dimensional shape is sliced perpendicular to some specified axis at a point.

How to calculate Resistance?

Resistance is a measure of the opposition to current flow in an electrical circuit is calculated using Resistance = (Resistivity*Length of Conductor)/Cross-Sectional Area. To calculate Resistance, you need Resistivity (ρ), Length of Conductor (l) & Cross-Sectional Area (A). With our tool, you need to enter the respective value for Resistivity, Length of Conductor & Cross-Sectional Area and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Resistance?

In this formula, Resistance uses Resistivity, Length of Conductor & Cross-Sectional Area. We can use 4 other way(s) to calculate the same, which is/are as follows -

Resistance = (Length-Final Length)/Final Length*Final Resistance
Resistance = Resistivity*Length/Cross-Sectional Area
Resistance = (Final Resistance*Length^2)/((Final Length)^2)
Resistance = Resistance at Reference Temperature*(1+Temperature Coefficient of Resistance*Change in Temperature)

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