Where is the Energy Stored?
Claim: energy is stored in the Electric field itself. Think of the energy needed to charge the capacitor as being the energy needed to create the field.
- The Electric field is given by:
- The energy density u in the field is given by:
- To calculate the energy density in the field, first consider the constant field generated by a parallel plate capacitor, where
This is the energy density, u, of the electric field….