APFIVE Change in Electric Potential Energy
A system consists of three charges: q₁ = 5.0 nC at (0,0), q₂ = -2.0 nC at (3.0 cm, 0), and q₃ = 4.0 nC at (0, 4.0 cm). If q₃ is moved to (3.0 cm, 4.0 cm), what is the change in the electric potential energy of the system?
A
Decreases by 1.26 × 10⁻⁶ J
B
Decreases by 2.16 × 10⁻⁷ J
C
Decreases by 7.20 × 10⁻⁸ J
D
Increases by 2.16 × 10⁻⁷ J
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