A Sphere with Radius 2 $+ 2.0 \mu \mathrm { C }$

question 108

Multiple Choice

A sphere with radius 2.0 mm carries a $+ 2.0 \mu \mathrm { C }$ charge. What is the potential difference, $V _ { B } - V _ { A }$ between point B, which is $4.0 \mathrm {~m}$ from the center of the sphere, and point A, which is $6.0 \mathrm {~m}$ from the center of the sphere? (k = 1/4??₀ = 9.0 × 10⁹ N ? m²/C²)

• A)1500 V
• B)-1500 V
• C)170 V
• D)-0.63 V

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