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Which unit correctly expresses the permittivity of free space?
AN m^2 C^-2
BC^2 N^-1 m^-2
CC N^-1 m^-1
DN C^-2 m^2 s^-1
Answer & Solution
Correct answer: B. C^2 N^-1 m^-2
Since k = 1/(4 pi e0) has units N m^2 C^-2, e0 has units C^2 N^-1 m^-2, with value 8.854 x 10^-12.
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