{
  "annotation_id": "3e08595a-c587-44fc-aa2d-ba5185caa31a",
  "date_created": "2026-03-02T18:01:10.852000Z",
  "date_modified": "2026-03-02T18:01:10.852000Z",
  "file_hash": "384db10984ce7be0fcfeffa1ccf3bcf8d853ccacc65ca3384217e5c853023488",
  "private": false,
  "record": {
    "abstract": "We present a simple method to determine the mutual inductance $M$ between two\ncoils in a coupled AC circuit by using a digital dual-phase lock-in amplifier.\nThe frequency dependence of the real and imaginary parts is measured as the\ncoupling constant is changed. The mutual inductance $M$ decreases as the\ndistance $d$ between the centers of coils is increased. We show that the\ncoupling constant is proportional to $d^{-n}$ with an exponent $n$ ($\\approx$\n3). This coupling is similar to that of two magnetic moments coupled through a\ndipole-dipole interaction.",
    "arxiv_id": "physics/0606124",
    "authors": [
      "Michael J. Schauber",
      "Seth A. Newman",
      "Lindsey R. Goodman",
      "Itsuko S. Suzuki",
      "Masatsugu Suzuki"
    ],
    "categories": [
      "physics.ed-ph"
    ],
    "doi": "10.1119/1.2820391",
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "title": "Measurement of mutual inductance from frequency dependence of impedance   of AC coupled circuit using digital dual-phase lock-in amplifier",
    "url": "https://arxiv.org/abs/physics/0606124"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "2a30ec5d-765b-4730-89e4-da063f850cbe",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}