A student is asked to show that two charged rods exert a non-contact force on each other. Which method gives the clearest evidence?
Hanging one charged rod on a thread and bringing the other one near
Rubbing two rods with a cloth and then pressing them firmly together
Placing two charged rods side by side on a dry wooden bench top
Holding a charged rod in each hand and moving them up and down
40 exam-style questions on AQA GCSE Physics 2.5 Static electricity, covering 2.5.1 Static charge and 2.5.2 Electric fields. Each one has a worked solution and a mark scheme showing where the marks go.