Question

A student charges a balloon and then brings it near a metal sphere hanging from the

ceiling. She brings it near the sphere, but does not touch. The sphere moves toward
the balloon. What are the charges on the balloon and the metal sphere?
a) The balloon has a positive charge and the metal sphere has a negative charge.
b) The balloon has a negative charge and the metal sphere has a positive charge.
c) Both are negatively charged.
d) Both are positively charged.

Answer 1

Answer: B

Step-by-step explanation:

The balloon will pick up stray electrons, so it will become negatively charged. Since it is attracted to the metal sphere, the sphere must be positively charged.

Answer 2

B

Step-by-step explanation:

the balloon has a negative charge and the metal sphere has a positive charge