You decide to help your physics professor do an interactive classroom demonstration. You are standing on a plastic bench that insulates you from your surroundings. Both you and the helium balloon you are holding are electrically neutral. You now rub the balloon against your sweater, so that the balloon becomes negatively charged, and then let the balloon float away. You are left
A) with no negative electrically charged particles in your body.
B) with a negative electric charge.
C) electrically neutral.
D) with a positive electric charge.

Question

Quizplus · Accepted Answer

When you rub the balloon against your sweater, electrons are transferred from your sweater to the balloon, giving the balloon a negative charge. Since electrons (negative charges) are removed from you, you are left with an excess of positive charges, making you positively charged.

You Decide to Help Your Physics Professor Do an Interactive