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Joule's Law Using Electric Current

Joule's first law states that the power of heating generated by an electrical conductor is proportional to the product of its resistance and the square of the current.

Heat equals power times time. Power equals the electric current squared times the electric resistance.

Formula

{QuantityVariable["Q", "Heat"] == QuantityVariable["P", "Power"]*QuantityVariable["t", "Time"], QuantityVariable["P", "Power"] == QuantityVariable["I", "ElectricCurrent"]^2*QuantityVariable["R", "ElectricResistance"]}

symbol description physical quantity
Q heat "Heat"
P power "Power"
t time "Time"
I electric current "ElectricCurrent"
R electric resistance "ElectricResistance"

Forms

Examples

Get the resource:

In[1]:=
ResourceObject["Joule's Law Using Electric Current"]
Out[1]=

Get the formula:

In[2]:=
FormulaData[ResourceObject["Joule's Law Using Electric Current"]]
Out[2]=

Use some values:

In[3]:=
FormulaData[ ResourceObject[ "Joule's Law Using Electric Current"], {QuantityVariable[ "t","Time"] -> Quantity[1, "Seconds"]}]
Out[3]=

Source Metadata

  • Creator:
  • Date: 1843

Publisher Information