An Electric Dipole with ±5 $1.0 \mathrm {~mm}$ To the Right of the Origin and the Negative Charge

question 71

Multiple Choice

An electric dipole with ±5.0 μC point charges is positioned so that the positive charge is $1.0 \mathrm {~mm}$ to the right of the origin and the negative charge is at the origin. How much work does it take to bring a $3.0 - \mu \mathrm { C }$ point charge from very far away to the point x = 3.0 mm, y = 0.0 mm? (k = 1/4πε₀ = 9.0 × 10⁹ N ∙ m²/C²)

• A) 23 J
• B) 110 J
• C) 19 J
• D) 49 J

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