Unit 12 · Magnetism and Electromagnetism

Chapter 12.2

Magnetism from Currents

Run a current through a wire and a compass beside it swings. Run a second current nearby and the two wires pull on each other with no magnet anywhere in sight.

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By the end

  1. 01Compute a long straight current's field and find its direction with the right-hand rule
  2. 02Add the fields of several wires as vectors, and find the field direction inside a loop
  3. 03Compute the force on a current-carrying wire and predict the force between parallel currents

In unit 12

  1. 12.1Magnetic Fields and the Force on a Moving Charge
  2. 12.2Magnetism from Currents
  3. 12.3Electromagnetic Induction and Faraday's Law
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