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Physics Review Question Unit: electricity Year: 1989 Question#: 27 Question: A negatively charged object is brought near a negatively charged electroscope. The leaves of the electroscope will? (1 ) Move closer together (2 ) Move farther apart (3 ) Become positively charged (4 ) become neutral What is this question really asking? Explanation by: Cory V (partly) [ Return to question menu ] Answer 1 Move closer together INCORRECT Like charges are supposed to repel each other return to top Answer 2 Move farther apart CORRECT With static electricity , like charges always repel against each each other and opposite charges are attracted. So the electroscope which already contains more negative charges than positive charges will have more negative charges forced into its leaves by the negatively charged object brought near it. The greater negative charges in the leaves will cause them to repel each other. return to top Answer 3 Become positively charged INCORRECT A negatively charged object brought near a negatively charged electroscope could not create a positive charge out of nowhere. return to top Answer 4 Becomes neutral INCORRECT There are no opposite charges to cancel out return to top What's this question really asking? Wil the leaves of an electroscope repel or attract to each other if a negatively charged object is brought near the knob of a negatively charged electroscope? return to top |
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