University Physics Volume 2Moebs, W., Ling, S.J., & Sanny, J. (2016). University physics volume 2. OpenStax. CC BY 4.0 . Access for free at https://openstax.org/books/university-physics-volume-2/pages/1-introduction
For Lesson 5, read "Chapter 10: DC Current" and "Chapter 11: Magnetic Feilds & Forces."
For Lesson 6, read "Chapter 12: Sources of Magnetic Fields" and "Chapter 13: Electromagnetic Induction."