PhysicsLAB: Electrostatic Vocabulary

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Refer to the following information for the next thirteen questions.

This set of questions is taken from the resource lesson on electrostatics and charges.

1. Isolated points of electric charge are called ____.

2. This type of charge results when an object contains an excess of electrons.

3. This type of charge results when an object contains a deficiency of electrons.

4a. An object can only have a magnitude of charge that is an integral multiple of the charge on an ____ .

4b. ____ was the American physicist who first measured this fundamental unit of charge.

5. This type of electrification occurs when the charging rod touches an electroscope.

6. This type of electrification requires that the charging rod NEVER touch a grounded electroscope.

7. The statement that the magnitude of the electric force between two charged bodies is directly proportional to the product of their charges and is inversely proportional to the square of the distance between their centers is called ____.

8. An atom or object that is uncharged is ____.

9. The magnitude of the charge on one electron equals ____ coulombs.

10. Materials through which charges flow easily are called ____.

11. The rubber and glass rods that are used in electrical demonstrations are examples of materials through which charges will not move easily. They are called ____.

12. A charged body of either sign will ____ a neutral body by inducing a charge of separation; that is, by temporarily polarizing the neutral body.

Refer to the following information for the next seven questions.

This set of questions is taken from the resource lesson on electric fields and their properties.

13. The region surrounding an electric charge in which another charge will feel a force of attraction or repulsion is call an ____ .

14a. Vectors used to show the location and strength of an electric field are called ____.

14b. They originate on ____ charges and terminate on negative charges.

14c. Their direction is defined by the direction in which a ____ test charge would move through an electric field.

14d. Electric field strength is measured in units of ____ .

15a. Like charges repel while unlike charges ____.

15b. The electric field lines between unlike charges are ____ in shape.

Refer to the following information for the next seven questions.

This set of questions is taken from the resource lessons on electric potential and voltage.

16. The difference in voltage, or potential, between any two points in an electric field equals the ____ required to move a unit charge between those two positions.

17. ____ surfaces cross field lines at right angles and are calibrated in volts.

18a. The closer together the surfaces in question 17 are to each other, the _____ the electric field is at that location.

18b. Another unit to measure electric field strength, in addition to your answer to question #14, is ____ .

19a. A charge's electrical potential energy within an electric field is calculated as the product of the ____ of its position times the magnitude of its charge.

19b. This quantity is a ____ as opposed to being a vector.

20. Charges flow from points of high ____ to points of low ____. (same word)