Physics Review Question Unit: Electricity and Magnetism Year: 1995 Question#: 24 Question: If 20. joules of work is done in transferring 5.0 coulombs of charge between two points, the potential difference between these two points is: (1 ) 100V (2 ) 50.V (3 ) 0.25V (4 ) 4.0V What is this question really asking? Explanation by: Dustin C. [ Return to question menu ] Answer 1 100V INCORRECT This answer is incorrect because by simply using the formula V= W/q you will see that you should divide energy by quantity of charge. return to top Answer 2 50.V INCORRECT This answer is incorrect because by simply using the formula V= W/q you will see that you should divide energy by quantity of charge. return to top Answer 3 0.25V INCORRECT This answer is incorrect because by simply using the formula V= W/q you will see that you should divide energy by quantity of charge. return to top Answer 4 4.0V CORRECT This answer is correct because when using the formula V= W/q you should come up with the equation 20. joules divided by 5.0 coulombs which produces the answer 4.0V. return to top What's this question really asking? This question is really asking how to find potential difference. return to top |
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