An industrial painting facility uses an electrostatic paint sprayer to coat car panels.
The sprayer gives a positive electric charge to each paint droplet as it leaves the nozzle.
The droplets of paint acquire a positive charge because the sprayer:
adds protons to the droplets
adds electrons to the droplets
removes protons from the droplets
removes electrons from the droplets
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.