Hand-Crank Generator Lights an LED

Light brightness changes with cranking. Ask students to predict what will happen. Crank slowly, then faster; reverse direction if setup permits. Key idea: Mechanical energy becomes electrical energy through electromagnetic induction. Ask: Where does the electrical energy come from? Safety and cleanup: Low-voltage educational generator. https://www.sfu.ca/physics/demos/demos-experiments/genecon-generator-burnaby/