Two Point Charges of +1

question 3

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

---

Definitions:

Needs and Wants

Fundamental human requirements (needs) and desires or wishes that are not essential but desired (wants).

Customer Value

The perception of what a product or service is worth to a customer versus the possible alternatives.

Nonmonetary Benefits

Advantages or perks received from a job, purchase, or transaction that do not involve financial compensation, such as satisfaction, convenience, or health improvements.

Monetary Benefits

The financial gains one receives from employment or investment, including salary, dividends, or interest.