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Physics Ch. 17
| Question | Answer |
|---|---|
| Electric Charge is both _______ and ________. | Charged; Quantized. |
| Define conductor. | Material that transfers charge easily. ex. Copper and Aluminum. |
| Define insulator. | Material that does not transfer charge easily. ex. Glass and Rubber. |
| What are the types of charge transfer? | -Friction. -Conduction. -Induction. |
| Define friction. | Two uncharged objects are rubbed together, some electrons will move from one object to the other. This produces a positive charged object and a negative charged object. ex. Balloons. |
| Define conduction. | Occurs when a charged object touches another object and electrons and can be transferred between the objects move from negative charged to positive charged. |
| Define induction. | The process of changing a conductor by bringing it near another charged objects. -Can be done with insulators, moves the charges to one side of molecule; this is known as polarization. |
| Forces increase as charges become ______. | Closer. |
| Electric force is a _______ force. What does this mean? | Field. -No physical contact between two objects, similar to gravitational force. |
| Gravity is always __________ while electric force can also be ________. | Positive; negative. |
| What type of quanitity is a force? | A vector quanitity. |
| Define principle of superposition. | Resultant force on a charge is the vector sum of the individual forces on that charge. |
| Define electric field. | A region in space around a charged object in which a stationary charged object experiences an electric force because of its charge. |
Created by:
OliviaRoark
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