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What is the potential 0.27 m from a 3 nC point charge in vacuum?
A100 V
B27 V
C300 V
D900 V
Answer & Solution
Correct answer: A. 100 V
V = (9×10⁹)(3×10⁻⁹)/0.27 = 27/0.27 = 100 V.
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