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Practice MCAT Question - Q29 - Answer!

What is the amount of work done on an electron by a potential difference of 100 volts?

A.  6.25 x 1020 eV
B.  100 eV
C.  1.60 x 10-17 eV
D.  1.60 x 10-19 eV

The correct answer is (B). The potential difference between two points is the ratio of the work done in moving the unit charge between the two points. Therefore, W = qV.

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