A cleaner uses an electrostatic sprayer to apply disinfectant to a metal trolley. Normally each disinfectant droplet is given a positive charge and the trolley is given a negative charge. One day a fault means that the trolley is given a positive charge instead.
Which describes how the disinfectant spray behaves while the fault is present?
The droplets still spread apart, but they are pushed away from the trolley.
The droplets still spread apart, and they are still pulled onto the trolley.
The droplets clump together, and they are pushed away from the trolley.
The droplets clump together, but they are still pulled onto the trolley.
80 exam-style questions on Edexcel GCSE Physics 11.2 Uses, dangers and electric fields, covering 11.2.1 Uses of electrostatic charge, 11.2.2 Dangers of sparking, 11.2.3 Electric fields, and 11.2.4 Electric fields and static electricity. Each one has a worked solution and a mark scheme showing where the marks go.