Wolfram Computation Meets Knowledge

Resistance Formula

The electrical resistance of an electrical conductor is a measure of the difficulty to pass an electric current through that conductor.

Electric resistance equals the product of the length and electric resistivity divided by the area.

Formula

QuantityVariable["R", "ElectricResistance"] == (QuantityVariable["L", "Length"]*QuantityVariable["ρ", "ElectricResistivity"])/QuantityVariable["A", "Area"]

symbol description physical quantity
R electric resistance "ElectricResistance"
A area "Area"
L length "Length"
ρ electric resistivity "ElectricResistivity"

Forms

Examples

Get the resource:

In[1]:=
ResourceObject["Resistance Formula"]
Out[1]=

Get the formula:

In[2]:=
FormulaData[ResourceObject["Resistance Formula"]]
Out[2]=

Use some values:

In[3]:=
FormulaData[
 ResourceObject[
  "Resistance Formula"], {QuantityVariable["A","Area"] -> 
   Quantity[1, ("Meters")^2], 
  QuantityVariable["R","ElectricResistance"] -> Quantity[10, "Ohms"]}]
Out[3]=

Source Metadata

Publisher Information