Explore the energy stored within electric and magnetic fields using our easy-to-use Energy Density of Fields Calculator. This tool helps physicists, engineers, and students quantify field energy, a fundamental concept in electromagnetism and general relativity.
Formula:
The energy density (u) of a field represents the energy stored per unit volume. For common fields:
- Electric Field (E): ue = ½ε0E2
- Magnetic Field (B): ub = ½ (B2 / μ0)
- Electromagnetic Field (Combined): u = ue + ub = ½ε0E2 + ½ (B2 / μ0)
Where:
- u = Energy Density (Joules per cubic meter, J/m³)
- E = Electric Field Strength (Volts per meter, V/m)
- B = Magnetic Field Strength (Teslas, T)
- ε0 = Permittivity of Free Space (8.854 × 10-12 F/m)
- μ0 = Permeability of Free Space (4π × 10-7 H/m)