If a person plugs a cord into a electrical outlet in the wall, and the cord is covered in black rubber, which statement is an accurate description of the materials?
a. electrons would not move through the wire if there was no rubber around the wire
b. electrons would easily move through the person if there was no rubber around the wire
c. electrons move through air when the cord is a few inches from the outlet
d. electrons easily move through the rubber around the wire