## Coulomb's Law - Questions

The Coulomb's Law Concept Builder is comprised of 48 questions. The questions are divided into 16 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 activities that can be engaged in through the Concept Builder. Those three activities are differentiated as follows:

• Charge Changes: Question Groups 1-5 ... Effect of Object Charge on Electrical Force
• Distance Matterse: Question Groups 6-10 ... Effect of Separation Distance on Electrical Force
• Putting it All Together: Question Groups 11-16 ... Effect of Object Charge and Separation Distanceon Electrical Force

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.

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### Coulomb's Law

Activity 1: Charge Changes
Question Group 1

Question 1
Objects 1 and 2 attract each other with a electrostatic force of 18.0 units. If the charge of Object 1 is doubled, then the new electrostatic force will be _____ units.

Question 2
Objects 1 and 2 attract each other with a electrostatic force of 36.0 units. If the charge of Object 1 is doubled, then the new electrostatic force will be _____ units.

Question 3
Objects 1 and 2 attract each other with a electrostatic force of 72.0 units. If the charge of Object 1 is doubled, then the new electrostatic force will be _____ units.

Question Group 2

Question 4
Objects 1 and 2 attract each other with a electrostatic force of 18.0 units. If the charge of Object 2 is tripled, then the new electrostatic force will be _____ units.

Question 5
Objects 1 and 2 attract each other with a electrostatic force of 36.0 units. If the charge of Object 2 is tripled, then the new electrostatic force will be _____ units.

Question 6
Objects 1 and 2 attract each other with a electrostatic force of 72.0 units. If the charge of Object 2 is tripled, then the new electrostatic force will be _____ units.

Question Group 3

Question 7
Objects 1 and 2 attract each other with a electrostatic force of 18.0 units. If the charge of Object 1 is halved, then the new electrostatic force will be _____ units.

Question 8
Objects 1 and 2 attract each other with a electrostatic force of 36.0 units. If the charge of Object 1 is halved, then the new electrostatic force will be _____ units.

Question 9
Objects 1 and 2 attract each other with a electrostatic force of 72.0 units. If the charge of Object 1 is halved, then the new electrostatic force will be _____ units.

Question Group 4

Question 10
Objects 1 and 2 attract each other with a electrostatic force of 18.0 units. If the charge of Object 1 is doubled AND the charge of object 2 is tripled, then the new electrostatic force will be _____ units.

Question 11
Objects 1 and 2 attract each other with a electrostatic force of 36.0 units. If the charge of Object 1 is doubled AND the charge of object 2 is tripled, then the new electrostatic force will be _____ units.

Question 12
Objects 1 and 2 attract each other with a electrostatic force of 72.0 units. If the charge of Object 1 is doubled AND the charge of object 2 is tripled, then the new electrostatic force will be _____ units.

Question Group 5

Question 13
Objects 1 and 2 attract each other with a electrostatic force of 18.0 units. If the charge of Object 1 is halved AND the charge of object 2 is tripled, then the new electrostatic force will be _____ units.

Question 14
Objects 1 and 2 attract each other with a electrostatic force of 36.0 units. If the charge of Object 1 is halved AND the charge of object 2 is tripled, then the new electrostatic force will be _____ units.

Question 15
Objects 1 and 2 attract each other with a electrostatic force of 72.0 units. If the charge of Object 1 is halved AND the charge of object 2 is tripled, then the new electrostatic force will be _____ units.

Activity 2: Distance Matters
Question Group 6

Question 16
Objects 1 and 2 attract each other with a electrostatic force of 18.0 units. If the distance separating Objects 1 and 2 is doubled, then the new electrostatic force will be _____ units.

Question 17
Objects 1 and 2 attract each other with a electrostatic force of 36.0 units. If the distance separating Objects 1 and 2 is doubled, then the new electrostatic force will be _____ units.

Question 18
Objects 1 and 2 attract each other with a electrostatic force of 72.0 units. If the distance separating Objects 1 and 2 is doubled, then the new electrostatic force will be _____ units.

Question Group 7

Question 19
Objects 1 and 2 attract each other with a electrostatic force of 18.0 units. If the distance separating Objects 1 and 2 is tripled, then the new electrostatic force will be _____ units.

Question 20
Objects 1 and 2 attract each other with a electrostatic force of 36.0 units. If the distance separating Objects 1 and 2 is tripled, then the new electrostatic force will be _____ units.

Question 21
Objects 1 and 2 attract each other with a electrostatic force of 72.0 units. If the distance separating Objects 1 and 2 is tripled, then the new electrostatic force will be _____ units.

Question Group 8

Question 22
Objects 1 and 2 attract each other with a electrostatic force of 18.0 units. If the distance separating Objects 1 and 2 is changed to one-half the original value (i.e., halved), then the new electrostatic force will be _____ units.

Question 23
Objects 1 and 2 attract each other with a electrostatic force of 36.0 units. If the distance separating Objects 1 and 2 is changed to one-half the original value (i.e., halved), then the new electrostatic force will be _____ units.

Question 24
Objects 1 and 2 attract each other with a electrostatic force of 72.0 units. If the distance separating Objects 1 and 2 is changed to one-half the original value (i.e., halved), then the new electrostatic force will be _____ units.

Question Group 9

Question 25
Objects 1 and 2 attract each other with a electrostatic force of 18.0 units. If the distance separating Objects 1 and 2 is changed to one-third the original value, then the new electrostatic force will be _____ units.

Question 26
Objects 1 and 2 attract each other with a electrostatic force of 36.0 units. If the distance separating Objects 1 and 2 is changed to one-third the original value, then the new electrostatic force will be _____ units.

Question 27
Objects 1 and 2 attract each other with a electrostatic force of 72.0 units. If the distance separating Objects 1 and 2 is changed to one-third the original value, then the new electrostatic force will be _____ units.

Question Group 10

Question 28
Objects 1 and 2 attract each other with a electrostatic force of 18.0 units. If the distance separating Objects 1 and 2 is changed to four times the original value (i.e., quadrupled), then the new electrostatic force will be _____ units.

Question 29
Objects 1 and 2 attract each other with a electrostatic force of 36.0 units. If the distance separating Objects 1 and 2 is changed to four times the original value (i.e., quadrupled), then the new electrostatic force will be _____ units.

Question 30
Objects 1 and 2 attract each other with a electrostatic force of 72.0 units. If the distance separating Objects 1 and 2 is changed to four times the original value (i.e., quadrupled), then the new electrostatic force will be _____ units.

Activity 3: Putting it All Together
Question Group 11

Question 31
Objects 1 and 2 attract each other with a electrostatic force of 18.0 units. If the charge of Object 1 is doubled AND the distance separating Objects 1 and 2 is tripled, then the new electrostatic force will be _____ units.

Question 32
Objects 1 and 2 attract each other with a electrostatic force of 36.0 units. If the charge of Object 1 is doubled AND the distance separating Objects 1 and 2 is tripled, then the new electrostatic force will be _____ units.

Question 33
Objects 1 and 2 attract each other with a electrostatic force of 72.0 units. If the charge of Object 1 is doubled AND the distance separating Objects 1 and 2 is tripled, then the new electrostatic force will be _____ units.

Question Group 12

Question 34
Objects 1 and 2 attract each other with a electrostatic force of 18.0 units. If the charge of Object 2 is tripled AND the distance separating Objects 1 and 2 is doubled, then the new electrostatic force will be _____ units.

Question 35
Objects 1 and 2 attract each other with a electrostatic force of 36.0 units. If the charge of Object 2 is tripled AND the distance separating Objects 1 and 2 is doubled, then the new electrostatic force will be _____ units.

Question 36
Objects 1 and 2 attract each other with a electrostatic force of 72.0 units. If the charge of Object 2 is tripled AND the distance separating Objects 1 and 2 is doubled, then the new electrostatic force will be _____ units.

Question Group 13

Question 37
Objects 1 and 2 attract each other with a electrostatic force of 18.0 units. If the charge of Object 1 is doubled AND the distance separating Objects 1 and 2 is doubled, then the new electrostatic force will be _____ units.

Question 38
Objects 1 and 2 attract each other with a electrostatic force of 36.0 units. If the charge of Object 1 is doubled AND the distance separating Objects 1 and 2 is doubled, then the new electrostatic force will be _____ units.

Question 39
Objects 1 and 2 attract each other with a electrostatic force of 72.0 units. If the charge of Object 1 is doubled AND the distance separating Objects 1 and 2 is doubled, then the new electrostatic force will be _____ units.

Question Group 14

Question 40
Objects 1 and 2 attract each other with a electrostatic force of 18.0 units. If the charge of Object 1 is doubled AND the charge of object 2 is tripled AND the distance separating Objects 1 and 2 is halved, then the new electrostatic force will be _____ units.

Question 41
Objects 1 and 2 attract each other with a electrostatic force of 36.0 units. If the charge of Object 1 is doubled AND the charge of object 2 is tripled AND the distance separating Objects 1 and 2 is halved, then the new electrostatic force will be _____ units.

Question 42
Objects 1 and 2 attract each other with a electrostatic force of 72.0 units. If the charge of Object 1 is doubled AND the charge of object 2 is tripled AND the distance separating Objects 1 and 2 is halved, then the new electrostatic force will be _____ units.

Question Group 15

Question 43
Objects 1 and 2 attract each other with a electrostatic force of 18.0 units. If the charge of Object 1 is one-third the original value AND the charge of object 2 is doubled AND the distance separating Objects 1 and 2 is doubled, then the new electrostatic force will be _____ units.

Question 44
Objects 1 and 2 attract each other with a electrostatic force of 36.0 units. If the charge of Object 1 is one-third the original value AND the charge of object 2 is doubled AND the distance separating Objects 1 and 2 is doubled, then the new electrostatic force will be _____ units.

Question 45
Objects 1 and 2 attract each other with a electrostatic force of 72.0 units. If the charge of Object 1 is one-third the original value AND the charge of object 2 is doubled AND the distance separating Objects 1 and 2 is doubled, then the new electrostatic force will be _____ units.

Question Group 16

Question 46
Objects 1 and 2 attract each other with a electrostatic force of 18.0 units. If the charge of Object 1 is one-fourth the original value AND the charge of object 2 is tripled AND the distance separating Objects 1 and 2 is halved, then the new electrostatic force will be _____ units.

Question 47
Objects 1 and 2 attract each other with a electrostatic force of 36.0 units. If the charge of Object 1 is one-fourth the original value AND the charge of object 2 is tripled AND the distance separating Objects 1 and 2 is halved, then the new electrostatic force will be _____ units.

Question 48
Objects 1 and 2 attract each other with a electrostatic force of 72.0 units. If the charge of Object 1 is one-fourth the original value AND the charge of object 2 is tripled AND the distance separating Objects 1 and 2 is halved, then the new electrostatic force will be _____ units.