Two point charges are fixed in vacuum on the x-axis: +6 μC at x = 0 and –3 μC at x =…

PHYSICS · Subjective · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

Two point charges are fixed in vacuum on the x-axis: +6 μC at x = 0 and –3 μC at x = 0.40 m. Taking the electric potential at infinity to be zero, find the coordinate(s) on the x-axis where the electric potential is zero. (Use k = 9 × 10⁹ N m² C⁻².)

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