Spheres of Charge: a Spherical, Non-Conducting Shell of Inner Radius

question 11

Multiple Choice

Spheres of charge: A spherical, non-conducting shell of inner radius = 10 cm and outer radius = 15 cm carries a total charge Q = 15 μC distributed uniformly throughout the volume of the shell. What is the magnitude of the electric field at a distance r = 12 cm from the center of the shell? (k = 1/4πε₀ = 8.99 × 10⁹ N ∙ m²/C²)

• A) 5.75 × N/C
• B) zero
• C) 2.87 × N/C
• D) 5.75 × N/C
• E) 2.87 × N/C

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