Two point charges of +1.0 μC and -2.0 μC are located 0.50 m apart. What is the minimum amount of work needed to move the charges apart to double the distance between them? (k = 1/4πε0 = 8.99 × 109 N ∙ m2/C2)
A) -36 mJ
B) +18 mJ
C) 0 mJ
D) +36 mJ
E) -18 mJ
Correct Answer:
Verified
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