A Sphere with Radius 2

question 9

Multiple Choice

A sphere with radius 2.0 mm carries +1.0 μC of charge distributed uniformly throughout its volume.What is the potential difference,V_B - V_A,between point B,which is 4.0 m from the center of the sphere,and point A,which is 9.0 m from the center of the sphere? (k = 1/4πε₀ = 8.99 × 10⁹ N ∙ m²/C²)

• A)1200 V
• B)-1200 V
• C)140 V
• D)-0.45 V

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