APFIVE Electric Field of Concentric Spherical Shells
Two concentric spherical shells have radii a and b (a < b). The inner shell has a uniform surface charge density σ₁, and the outer shell has a uniform surface charge density σ₂. What is the electric field at a point at distance r, where a < r < b?
A
E = (σ₁a²)/(ε₀r²)
B
E = (σ₁a² - σ₂b²)/(ε₀r²)
C
E = (σ₁a² + σ₂b²)/(ε₀r²)
D
E = (σ₂b² - σ₁a²)/(ε₀r²)
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