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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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