Two Point Charges of +1

question 26

Multiple Choice

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

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