Calculate the electrical energy stored in an inductor's magnetic field.
Inductor Parameters
Calculation Results
Enter inductance and current to calculate
About this calculator
Quick Reference
EEnergy (Joules)
LInductance (Henrys)
ICurrent (Amperes)
Overview
Energy is stored in an inductor in the form of a magnetic field. When current flows through the coils, a magnetic field is established, and the energy required to create this field is 'stored' until the current changes.
💡
Pro Tips
Stored energy increases with the square of the current ($I^2$).
Inductors are the magnetic equivalent of capacitors (which store energy in an electric field).
Energy is measured in Joules (J).
!
Fun Facts
"Large inductors (like those in power grids) can store enough energy to be dangerous if the circuit is suddenly opened."
"Joseph Henry, an American scientist, discovered self-induction around the same time as Michael Faraday."
"Inductors can be used to smooth out spikes in power supplies because they resist sudden changes in current."
