Figure 7. For a transformer with two current elements, the two current elements are relatively close. Primary coil connects an AC power supply. Secondary coil connects a resistance

From

Energy Flow and Photons from Primary Coil to Secondary Coil of Transformer

Shuang-ren Zhao

International Journal of Physics. 2023, 11(1), 24-39 doi:10.12691/ijp-11-1-4