Lecture/demonstration, four hours; discussion, one hour. Enforced requisites: course 1A, 1B, Mathematics 32A, 32B. Enforced corequisite: Mathematics 33A. Magnetic fields, Ampere's law, Faraday's law, inductance, and alternating current circuits. Maxwell's equations, electromagnetic waves, light, geometrical optics, interference and diffraction. Special relativity. P/NP or letter grading.