Homeopathic medicines contain ultra-low concentrations of metal and compounds, and it is challenging to classify homeopathic potencies using modern characterization tools. This work presents a novel experimental tool for classifying various homeopathic medicines under a low-frequency generated electromagnetic (EM) fields. A custom-built primary coil is used for generating EM fields at different excitation frequencies. The potentized test samples were prepared at decimal dilution scale of Ferrum with α‑lactose monohydrate and exhibited significant and distinct induced EM responses in the second sensing coil. The measured responses decrease logarithmically due to reducing Ferrum concentration. The resolution improved in higher potencies from 0.03 µV at 300 Hz to 0.24 µV at 4.8 kHz. Different compounds of homeopathic medicines were also investigated to produce distinct induced EM characteristics. These results were correlated with Raman spectroscopy, impedance analyser, and FT-IR analysis. The experimental investigation confirmed the classification of potencies and the technique developed to detect ultra-low metallic concentrations.