What are the units of $K = 1/4\pi {\varepsilon _0}$
A${C^2}{N^{ - 1}}{m^{ - 2}}$
B$N{m^2}{C^{ - 2}}$
C$N{m^2}{C^2}$
D
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B$N{m^2}{C^{ - 2}}$
b (b) Unit of ${\varepsilon _0} = {C^2}/N{\rm{ - }}{m^2}$ $\Rightarrow$ Unit of $K = $ $N{m^2}{C^{ - 2}}$
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