Charge Q Is Distributed Uniformly Throughout an Insulating Sphere of Radius

question 30

Multiple Choice

Charge Q is distributed uniformly throughout an insulating sphere of radius R. The magnitude of the electric field at a point R/2 from the center is:

• A) Q/4 \(\pi\)\(\varepsilon\)₀R²
• B) Q/ \(\pi\)\(\varepsilon\)₀R²
• C) 3Q/4 \(\pi\)\(\varepsilon\)₀R²
• D) Q/8 \(\pi\)\(\varepsilon\)₀R²
• E) none of these

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