3. A metal sphere is electrically neutral. It is touched by a positively charged metal rod. As a
result, the metal sphere becomes charged positively. Which of the following occur during
the process? List all that apply.
a. The metal sphere gains some protons.
b. Electrons are transferred from the sphere to the rod.
c. The metal sphere loses electrons.
d. The overall charge of the system is conserved.
e. Protons are transferred from the rod to the sphere.
f. Positive electrons are moved between the two objects.
