Two 30 ?C Charges Lie on the X-Axis, One at the the Origin

question 117

Multiple Choice

Two 3.0 ?C charges lie on the x-axis, one at the origin and the other at $2.0 \mathrm {~m}$ What is the potential (relative to infinity) due to these charges at a point at $6.0 \mathrm {~m}$ on the x-axis? (k = 1/4??₀ = 9.0 × 10⁹ N ? m²/C²)

• A)11,000 V
• B)9000 V
• C)14,000 V
• D)3400 V

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