A student rubs a plastic ruler with a woollen cloth. The ruler becomes negatively charged.
What transfer of charge has occurred?
Electrons have transferred from the cloth to the ruler.
Protons have transferred from the cloth to the ruler.
Electrons have transferred from the ruler to the cloth.
Protons have transferred from the ruler to the cloth.
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.