In a resonance, specially if we resonant at the natural frequency, the generated waves' intensity will add up thus resulting in a wave of ever increasing intensity.
This phenomena is responsible for taking bridges down, when the wind reaches the resonant frequency of the bridge material, and the wind force starts adding up to the already resonating waves and the bridge material fractures and collapses.
I wonder if we could do the same for electric current.
Given an AC voltage source (not a very high voltage), with constant upper and lower boundaries for the source AC voltage, could I feed it to a "resonant circuit" such as the current measured by the amperemeter over time would be like:
And use this as an artificial way to increase the current in a load? (knowing that this would probably be the recipe to burn down everything for excess of current)