Electric fields. Electric Potential. Electric Currents. DC circuits. Magnetic Fields. The Vector Potential.
Resnick, Halliday & Krane Physics, Volume 2, 5th Edition Wiley Purcell, Electricity and Magnetism, 3rd ed. Cambridge University Press Feynman, R.P., Leighton, R.B. and Sands, M., The Feynman Lectures on Physics, Vol. II, The New Millennium Edition: Mainly Electromagnetism and Matter Basic Books http://www.feynmanlectures.caltech.edu/