Physics · Oct / Nov 2022 · Paper 11 · Question 27

A plastic rod and a cloth are initially uncharged. The rod is then rubbed with the cloth and the cloth becomes positively charged. What is the sign of the charge on the plastic rod and why does it become charged?

1. Anegative; electrons move from the cloth to the rod
2. Bnegative; protons move from the rod to the cloth
3. Cpositive; electrons move from the rod to the cloth
4. Dpositive; protons move from the cloth to the rod

As printed in the paper