What is the value of the charge that experiences a force of 2.4 × 10–3 N in an electric field of 6.8 × 10–5 N/C?

Use the relationship between force, charge, and electric field: F = qE, so q = F/E. Substituting gives q = (2.4 × 10⁻³ N)/(6.8 × 10⁻⁵ N/C) ≈ 3.5 × 10¹ C. The charge is 3.5 × 10¹ C, choice D.

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