A student rubs an uncharged glass rod with a dry silk cloth, causing both the rod and the cloth to become charged. Why does the glass rod become positively charged and the silk cloth become negatively charged?
The glass rod gains positive charges and the silk cloth loses electrons.
The glass rod gains electrons and the silk cloth loses electrons.
The glass rod loses electrons and the silk cloth gains electrons.
The glass rod loses electrons and the silk cloth loses positive charges.
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.