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Two Electric Charges QA = + 1

Question 45

Multiple Choice

Two electric charges QA = + 1.0 μC and QB= - 2.0 μC are located 0.50 m apart. How much work is needed to move the charges apart and double the distance between them?


A) -36 × 10-3J
B) +18 × 10-3
C) 0
D) +36 × 10-3
E) -18 × 10-3

Correct Answer:

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