Electric Field of a Single Point-Charge: a Small Glass Bead

question 17

Multiple Choice

Electric field of a single point-charge: A small glass bead has been charged to 8.0 nC. What is the magnitude of the electric field 2.0 cm from the center of the bead? (k = 1/4πε₀ = 8.99 × 10⁹ N ∙ m²/C²)

• A) 1.8 × 10⁵ N/C
• B) 3.6 × 10³ N/C
• C) 1.4 × 10^-3 N/C
• D) 3.6 × 10^-6 N/C

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