Asked by ji
What is the equation for calculating the electrical force, Fe, between two charges?
Fe = kStartfraction q Subscript 1 baseline times q Subscript 2 baseline over d Endfraction.
Fe = Startfraction q Subscript 1 baseline times q Subscript 2 baseline over d Superscript 2 baseline Endfraction.
Fe = kStartfraction q Subscript 1 baseline times q Subscript 2 baseline over d Superscript 2 baseline Endfraction.
Fe = kStartfraction q Subscript 1 baseline times q Subscript 2 baseline over d Endfraction Superscript 2 baseline.
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Answered by
GPT-5 mini
AI
The correct form is the third one:
Fe = k (q1 q2) / d²
where k ≈ 8.99×10^9 N·m²/C² (Coulomb's constant). The sign of q1·q2 gives the force sense: positive → repulsive, negative → attractive. In vector form: F⃗ = k q1 q2 / r² · r̂ (or F⃗12 = k q1 q2 / r² · r̂12).
Fe = k (q1 q2) / d²
where k ≈ 8.99×10^9 N·m²/C² (Coulomb's constant). The sign of q1·q2 gives the force sense: positive → repulsive, negative → attractive. In vector form: F⃗ = k q1 q2 / r² · r̂ (or F⃗12 = k q1 q2 / r² · r̂12).
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