How much work is required to move
3.0 coulombs of electric charge a distance of
0.010 meter through a potential difference of
9.0 volts?
(1) 2.7 × 10^3 j (3) 3.0 j
(2) 27 j (4) 3.0 × 10^−2 j

So we want to know how much work is needed to move a charge Q=3C for a distance r=0.01m trough a potencial difference U=9V. Work of electric potential is defined as W=Q*U and we can now simply put in the numbers. We get: W=3C*9V=27J. So the correct answer is (2) 27J.

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