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?
A. The wall will have its positive charges on the side closer to the balloon
B. The wall will now have all positive charges and no negative charges
C. The wall will have negative charges on the the side closer to the balloon
D. The charges in the wall will not change or rearrange at all.
C. The wall will have negative charges on the side closer to the balloon.
When the negatively charged balloon is brought near the neutral wall, the negative charges on the balloon will repel the electrons in the wall, causing the electrons to move away from the balloon. This will leave positive charges on the side of the wall closest to the balloon, and negative charges on the side furthest from the balloon.