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Ch. 16 review
| Question | Answer |
|---|---|
| charges can be ____ or _____ | positive; negative |
| the charge of the object is determined by the transfer of _____ | electrons |
| like charges _____ while unlike charges _______ | repel; attract |
| electrons have a ______ charge and move around. Charge is _______ | negative; conserved |
| millikan's oil drop experiment showed________ ________ __________ | charge is quantized |
| Charles Coulomb's work led to a better understanding of _______ _______ | electric charge |
| ________ are materials in which electric charge moves freely | conductors |
| ______ are materials in which electric charges do not move freely | insulators |
| if a glass rod is rubbed with silk, electrons leave the rod, so the silk becomes ______ charged and the rod becomes ______ charged | negatively; positively |
| _____ occurs when you charge a conductor by bringing it near another charged object and then grounding the conductor. only works on _______ | induction; conductors |
| ________ occurs when you bring a charged object near an insulator inducing a surface charge on the insulator. only works on ________ | polarization; insulators |
| _________ occurs when two objects are rubbed together and electrons are transferred due to friction. works on ______ & _______ | charging by contact; conductors and insulators |
| electric force is similar to gravity because they are _____ ______ and get ______ when distance between objects decrease | field forces; stronger |
| electric force is different from gravity because electric force is _______ and gravity cannot ______ | attractive; repel |
| electric force when distance is halved? | 4 times stronger |
| electric force when distance is doubled? | 1/4 as strong |
| electric force when distance is tripled? | 1/9 as strong |
| electric force when distance is three times closer | 9 times stronger |
| you can increase an electric field between two objects by _____ the ______ and _____ the ______ | increase charge; decrease distance |
| when drawing electric field lines, arrows always point _______ a positive charge | away |
| when drawing electric field lines, arrows always point _____ a negative charge | toward |
| when drawing electric field lines, the number of lines is ____ to the strength of the field | proportional |
| excess charge accumulates _________ or where radius of curvature is _______ | at sharp points; smallest |
| electric field strength depends on _____ and ______ | charge; distance |
Created by:
accident_prone
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