Utilize our Electromagnetic Field Energy Density Calculator to determine the energy stored per unit volume within an EM field. Input electric and magnetic field strengths along with medium properties to get instant results, crucial for understanding wave propagation and fundamental physics.
Formula:
Formula for Electromagnetic Field Energy Density
The energy density (u) of an electromagnetic field is given by:
u = ½εE2 + ½(1/μ)B2
Where:
- u: Electromagnetic Field Energy Density (Joules per cubic meter, J/m3)
- ε: Permittivity of the medium (Farads per meter, F/m)
- E: Electric Field Strength (Volts per meter, V/m)
- μ: Permeability of the medium (Henries per meter, H/m)
- B: Magnetic Field Strength (Tesla, T)
Note: For free space (vacuum), use ε0 = 8.854 × 10-12 F/m and μ0 = 4π × 10-7 H/m.