Resposta:
Nenhuma das alternativas bate com os valores encontrados.
Explicação:
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Dados
[tex]Q=2\;\mu C=2 \times 10^{-6}\;C\\\\d=0{,}5\;m=5 \times 10^{-1}\;m[/tex]
Campo elétrico
[tex]E=\dfrac{k_0\;.\;Q}{d^2}\\\\\\E=\dfrac{9 \times 10^9\;.\;2 \times 10^{-6}}{(5 \times 10^{-1})^2}\\\\\\E=\dfrac{(9\;.\;2) \times 10^{(9-6)}}{25 \times 10^{-2}}\\\\\\E=\dfrac{18 \times 10^{3}}{25 \times 10^{-2}}\\\\\\E=\dfrac{18}{25} \times 10^{[3-(-2)]}\\\\\\E=0{,}72 \times 10^{(3+2)}\\\\\\E=0{,}72 \times 10^{5}\\\\\\\boxed{E=7{,}2 \times 10^{4}\;N/C}[/tex]
Potencial elétrico
[tex]V=\dfrac{k_0\;.\;Q}{d}\\\\\\V=\dfrac{9 \times 10^9\;.\;2 \times 10^{-6}}{5 \times 10^{-1}}\\\\\\V=\dfrac{(9\;.\;2) \times 10^{(9-6)}}{5 \times 10^{-1}}\\\\\\V=\dfrac{18 \times 10^{3}}{5 \times 10^{-1}}\\\\\\V=\dfrac{18}{5} \times 10^{[3-(-1)]}\\\\\\V=3{,}6 \times 10^{(3+1)}\\\\\\\boxed{V=3{,}6 \times 10^{4}\;V}[/tex]
