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When two or more point charges act on a region, the resultant electric field at any point is the vector sum of the individual fields — as stated in the EURSC Physics S6 syllabus §3.2.
Physics S6 · Section 3.2 — Electric fields
Explain the superposition principle for electric fields.
As stated in the EURSC Physics S6 syllabus §3.2, the electric field at a point due to several charges is the vector sum of the fields each charge would produce alone.
State: superposition applies to any number of point charges. Explain: fields are vectors, so magnitude and direction both matter when they are added. Deduce: for two equal and opposite charges, the resultant field between them is stronger than either field alone.
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