Three Charges Q₁, Q₂, and Q₃, Each Equal to 6

question 19

Multiple Choice

Three charges Q₁, Q₂, and Q₃, each equal to 6.4 *10^-19 C, are in a straight line. The distance between neighboring charges is 60 nm. The magnitude of the electric field at P, which is 80 nm from Q₂ on a line at right angles to the line between Q₁ and Q₃, is

• A) 1.2 * 10^-8 N/C
• B) 16 N/C
• C) 2.0 N/C
• D) 1.9 *10¹⁰ N/C
• E) 1.2 *10⁸ N/C

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