http://phet.colorado.edu/sims/html/balloons-and-static-electricity/latest/balloo

Question

http://phet.colorado.edu/sims/html/balloons-and-static-electricity/latest/balloons-and-static-electricity_en.html

Use the link to answer the following questions:

1.

(2 points) Look at the balloon. What can you say about its charge?

2.

(2 points) Click and drag the balloon onto the sweater. What happens to the balloon?

3.

(2 points) How did the balloon get charged?

4.

(2 points) Bring the balloon into the middle, between the sweater and the wall. What happens to the balloon when you let it go?

5.

(2 points) Bring the balloon into contact with the wall. What happens to the charges in the wall?

6.

(2 points) When the negative charges in the wall are pushed toward one side, the wall becomes

A. The balloon has a net positive charge. B. The balloon has a net negative charge. C. The balloon has no charges. D. The balloon has both positive and negative charges and zero net charge.

Explanation / Answer

1) Balloon has 4 positive charges and 4 negative charges, Hence net charge on the balloon is zero

Answer is D. The balloon has both positive and negative charges and zero net charge

2) B. It becomes negatively charged.

3) C. It did not get charged

4) Nothing happens

5) A. Nothing; they are still there and not moving.

6) A. polarized.

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