In a pharmaceutical manufacturing plant, dry lactose powder is transported at high velocity through a non-conducting polymer delivery tube. Explain how both the powder and the tube become electrostatically charged during this process.
47 exam-style questions on Edexcel GCSE Physics 11.1 Charging by friction, covering 11.1.1 Charging insulators by friction, 11.1.2 Forces between charges, 11.1.3 Electrostatic phenomena, and 11.1.4 Earthing and removing charge. Each one has a worked solution and a mark scheme showing where the marks go.