A balloon and a section of a wall both have neutral charges, as shown below.
A student rubs his hair on the balloon, giving it a negative charge. How will the charges be arranged in the wall when it is placed near the negatively changed balloon?
• The wall will have its positive charges on the side closer to the balloon
• The wall will now have all positive charges and no negative charges
• The wall will have negative charges on the the side closer to the balloon
• The charges in the wall will not change or rearrange at all.