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.

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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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