Infinite Line of Charge: a Long, Thin Rod Parallel to the Y-Axis

question 15

Multiple Choice

Infinite line of charge: A long, thin rod parallel to the y-axis is located at x = -1.0 cm and carries a uniform linear charge density of +1.0 nC/m. A second long, thin rod parallel to the z-axis is located at x = +1.0 cm and carries a uniform linear charge density of -1.0 nC/m. What is the net electric field due to these rods at the origin? (ε₀ = 8.85 × 10^-12 C²/N ∙ m²)

• A) (-3.6 × 10³ N/
• B) (1.8 × 10³ N/
• C) (-1.8 × 10³ N/
• D) (3.6 × 10³ N/
• E) zero

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