Three identical charges are placed at the corners of an equilateral triangle of side

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

Three identical charges are placed at the corners of an equilateral triangle of side ll. If the force between any two charges is FF, the work required to double the dimensions of the triangle is (a) −3Fl-3Fl (b) 3Fl3Fl (c) -\frac{3}{2}Fl (d) \frac{3}{2}Fl

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