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The fundamental equation for the force (F) on a charged particle (q) in an electric field (E) is F = qE.From this equation, it is clear that the force on a charged particle directly depends on:i. The magnitude of the charge on the body (q).ii. The strength of the electric field (E), also known as the intensity of the field.The distance between the body and a test charge (iii) would be relevant if we were calculating the electric field E itself using Coulomb's law from a source charge, but once E is established or given as 'strength of the intensity of the field', the force on another charged particle placed in that field depends only on its own charge and the field strength.