Electric and magnetic energy densities of the earth

[sept26bc]

Homework Statement

What are the units for electric energy density and magnetic energy density? Is it J/m^3

Homework Equations

μ(mag)= (B2)/ (2μo)

μ(electric) = (1/2) (εo) (E2)

The Attempt at a Solution

Magnetic energy density : T2/ N/A2 = J/m^3
electric energy density : C2/ Nm2 x N/C

 

[Simon Bridge]

Start with the definition of "energy density".
Write the units for that definition.

You can show that the magnetic and electric energy density expressions lead to equivalent units by doing the dimensional analysis.