Two point charges of +2.0 μC and -6.0 μC are located on the x-axis at x = -1.0 cm and x = +2.0 cm respectively.Where should a third charge of +3.0-μC be placed on the +x-axis so that the potential at the origin is equal to zero? (k = 1/4πε₀ = 8.99 × 10⁹ N ∙ m²/C²) A)x = 4.0 cm B)x = 1.0 cm C)x = 2.0 cm D)x = 3.0 cm E)x = 5.0 cm

Question

Quizplus · Accepted Answer

The potential at the origin due to the charges is the sum of the potentials from each charge. The potential from a point charge is given by V = kQ/r. Setting the sum of potentials from all three charges to zero and solving for the position of the third charge gives x = 3.0 cm.

Two Point Charges of +2