A student rubs a polythene rod with a woollen cloth.
The rod becomes negatively charged.
What has happened to the rod?
It has gained electrons.
It has gained protons.
It has lost electrons.
It has lost protons.
145 exam-style questions on CIE IGCSE Physics 4.2.1a Positive and negative charge. Each one has a worked solution and a mark scheme showing where the marks go.