What Is the Approximate Radius of an Equipotential Spherical Surface

question 16

Multiple Choice

What is the approximate radius of an equipotential spherical surface of 30 V about a point charge of +15 nC if the potential at an infinite distance from the surface is zero?

• A)1.0 m
• B)2.1 m
• C)3.0 m
• D)4.5 m
• E)6.8 m

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