In a commercial bakery, dry flour is transported at high speeds through a plastic delivery pipe into a metal storage silo.
Explain how the delivery pipe and the flour particles become electrically charged as the flour is transported.
Operating a delivery system with a build-up of static charge can be highly dangerous.
Describe a possible danger of this charge build-up in the storage facility.
Technicians connect a flexible copper earthing strap from the delivery pipe to the ground. Explain how connecting this strap reduces the danger.
31 exam-style questions on Edexcel IGCSE Physics Electric charge. Each one has a worked solution and a mark scheme showing where the marks go.