A charged plastic comb is held just above some very small pieces of dry paper. The pieces of paper jump up to the comb. What does this observation show?
The pieces of paper must carry the same charge as the comb does
The comb must have lost all of its charge to the pieces of paper
The comb must be touching the pieces of paper through the air
The comb must exert a force on the paper without touching it
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.