A student wants to charge two objects by rubbing them together. Which pair of objects is most likely to become charged?
A copper rod rubbed with a sheet of aluminium foil
An iron nail rubbed with a stainless steel spoon
A polythene rod rubbed with a dry woollen cloth
A brass tube rubbed with a length of copper wire
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.