A Point Charge of +3 $29.0 \mathrm {~J}$ Of Work to Bring Them to a Final Configuration in Q

question 127

Multiple Choice

A point charge of +3.00 ?C and a second charge Q are initially very far apart. If it takes $29.0 \mathrm {~J}$ of work to bring them to a final configuration in which the $+ 3.00 - \mu \mathrm { C }$ charge is at the point x = 1.00 mm, y = 1.00 mm, and the second charge Q is at the point x = 1.00 mm, y = 3.00 mm, find the magnitude of the charge Q. (k = 1/4??₀ = 8.99 × 10⁹ N ? m²/C²)

• A)2.15 ?C
• B)4.30 ?C
• C)10.74 ?C
• D)4.30 nC

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