Three point charges lie on the x-axis: +3 μC at x = 0, −2 μC at x = 0.30 m
PHYSICS · Subjective · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
Three point charges lie on the x-axis: +3 μC at x = 0, −2 μC at x = 0.30 m, and +1 μC at x = 0.60 m. With the potential at infinity taken as zero, determine all positions on the x-axis (if any) where the net electric potential is zero. (k = 9 × 10⁹ N m² C⁻².)