19: Electromagnetism Last updated Jan 11, 2021 Save as PDF 18.3: Earth as a Magnet 19.1: Electromagnet Page ID582 ( \newcommand{\kernel}{\mathrm{null}\,}\) 19.1: Electromagnet19.2: Electromotive Force19.3: Electric Motor19.4: Generator19.5: Lenz's Law19.6: Transformers