Two Point Charges,Q₁ = -1

question 1438

Multiple Choice

Two point charges,Q₁ = -1.0 μC and Q₂ = + 4.0 μC,are placed as shown in the figure.
(k = 1/4πε₀ = 8.99 × 10⁹ N • m²/C²) The y component of the electric field,at the origin O,is closest to

• A) 6.0 × 10^-3 N/C.
• B) -6.0 × 10^-3 N/C.
• C) 3.8 × 10^-3 N/C.
• D) -3.8 × 10^-3 N/C.
• E) 7.1 × 10^-3 N/C.

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