## Charge Interactions - Questions

The Charge Interactions Concept Builder is comprised of 24 questions. The questions are divided into 12 different Question Groups. Questions in the same group are rather similar to one another. The Concept Builder is coded to select at random a question from each group until a student is successful with that group of questions.

There are three different difficulty levels that can be engaged in through the Concept Builder. Those three levels are differentiated as follows:

• Apprentice Difficulty Level: Question Groups 1-4. Interactions between four objects are described; must identify the type of charge of three of the objects.
• Master Difficulty Level: Question Groups 5-8. Interactions between five objects are described; must identify the type of charge of four of the objects.
• Wizard Difficulty Level: Question Groups 9-12. Interactions between six objects are described; must identify the type of charge of five of the objects.

The questions from each group are shown below. Teachers are encouraged to view the questions in order to judge which activities are most appropriate for their classes. We recommend providing students two or more options.

The Physics Classroom grants teachers and other users the right to print these questions for private use. Users are also granted the right to copy the text and modify it for their own use. However, this document should not be uploaded to other servers for distribution to and/or display by others. The Physics Classroom website should remain the only website or server from which the document is distributed or displayed. We also provide a PDF that teachers can use under the same conditions. We have included a link to the PDF near the bottom of this page.

### Charge Interactions

#### Apprentice Difficulty Level

Question Group 1
Question 1
Object A is positively charged. Object A and Object B attract. Object B and Object C repel. Object C and Object D attract. What type of charge does Object B, Object C, and Object D possess?

Question 2
Object A is negatively charged. Object A and Object B attract. Object B and Object C repel. Object C and Object D attract. What type of charge does Object B, Object C, and Object D possess?

Question Group 2
Question 3
Object A is positively charged. Object A and Object B repel. Object B and Object C/ attract. Object C and Object D repel. What type of charge does Object B, Object C, and Object D possess?

Question 4
Object A is negatively charged. Object A and Object B repel. Object B and Object C/ attract. Object C and Object D repel. What type of charge does Object B, Object C, and Object D possess?

Question Group 3
Question 5
Object A is positively charged. Object A and Object B attract. Object B and Object C repel. Object C and Object D repel. What type of charge does Object B, Object C, and Object D possess?

Question 6
Object A is negatively charged. Object A and Object B attract. Object B and Object C repel. Object C and Object D repel. What type of charge does Object B, Object C, and Object D possess?

Question Group 4
Question 7
Object A is positively charged. Object A and Object B attract. Object B and Object C attract. Object C and Object D repel. What type of charge does Object B, Object C, and Object D possess?

Question 8
Object A is negatively charged. Object A and Object B attract. Object B and Object C attract. Object C and Object D repel. What type of charge does Object B, Object C, and Object D possess?

#### Master Difficulty Level

Question Group 5
Question 9
Object A is positively charged. Object A and Object B attract. Object B and Object C repel. Object C and Object D repel. Object D and Object E attract. What type of charge does Object B, Object C, Object D, and Object E possess?

Question 10
Object A is negatively charged. Object A and Object B attract. Object B and Object C repel. Object C and Object D repel. Object D and Object E attract. What type of charge does Object B, Object C, Object D, and Object E possess?

Question Group 6
Question 11
Object A is positively charged. Object A and Object B repel. Object B and Object C repel. Object C and Object D repel. Object D and Object E attract. What type of charge does Object B, Object C, Object D, and Object E possess?

Question 12
Object A is negatively charged. Object A and Object B repel. Object B and Object C repel. Object C and Object D repel. Object D and Object E attract. What type of charge does Object B, Object C, Object D, and Object E possess?

Question Group 7
Question 13
Object A is positively charged. Object A and Object B attract. Object B and Object C repel. Object C and Object D attract. Object D and Object E repel. What type of charge does Object B, Object C, Object D, and Object E possess?

Question 14
Object A is negatively charged. Object A and Object B attract. Object B and Object C repel. Object C and Object D attract. Object D and Object E repel. What type of charge does Object B, Object C, Object D, and Object E possess?

Question Group 8
Question 15
Object A is positively charged. Object A and Object B attract. Object B and Object C attract. Object C and Object D repel. Object D and Object E repel. What type of charge does Object B, Object C, Object D, and Object E possess?

Question 16
Object A is negatively charged. Object A and Object B attract. Object B and Object C attract. Object C and Object D repel. Object D and Object E repel. What type of charge does Object B, Object C, Object D, and Object E possess?

#### Wizard Difficulty Level

Question Group 9
Question 17
Object A is positively charged. Object A and Object B repel. Object B and Object C attract. Object C and Object D repel. Object D and Object E attract. Object E and Object F attract. And Object F and a neutral object attract each other. What type of charge does Object B, Object C, Object D, Object E, and Object F possess?

Question 18
Object A is negatively charged. Object A and Object B repel. Object B and Object C attract. Object C and Object D repel. Object D and Object E attract. Object E and Object F attract. And Object F and a neutral object attract each other. What type of charge does Object B, Object C, Object D, Object E, and Object F possess?

Question Group 10
Question 19
Object A is positively charged. Object A and Object B attract. Object B and Object C repel. Object C and Object D attract. Object D and Object E repel. Object E and Object F attract. And Object F and a neutral object attract each other. What type of charge does Object B, Object C, Object D, Object E, and Object F possess?

Question 20
Object A is negatively charged. Object A and Object B attract. Object B and Object C repel. Object C and Object D attract. Object D and Object E repel. Object E and Object F attract. And Object F and a neutral object attract each other. What type of charge does Object B, Object C, Object D, Object E, and Object F possess?

Question Group 11
Question 21
Object A is positively charged. Object A and Object B repel. Object B and Object C attract. Object C and Object D attract. Object D and Object E repel. Object E and Object F repel. What type of charge does Object B, Object C, Object D, Object E, and Object F possess?

Question 22
Object A is negatively charged. Object A and Object B repel. Object B and Object C attract. Object C and Object D attract. Object D and Object E repel. Object E and Object F repel. What type of charge does Object B, Object C, Object D, Object E, and Object F possess?

Question Group 12
Question 23
Object A is positively charged. Object A and Object B repel. Object B and Object C repel. Object C and Object D attract. Object D and Object E attract. Object E and Object F repel. What type of charge does Object B, Object C, Object D, Object E, and Object F possess?

Question 24
Object A is negatively charged. Object A and Object B repel. Object B and Object C repel. Object C and Object D attract. Object D and Object E attract. Object E and Object F repel. What type of charge does Object B, Object C, Object D, Object E, and Object F possess?