brazil-enem 2018 Q108

brazil-enem · Other · enem__day2 Not Maths
QUESTION 108
While researching a resistor made of a new type of material, a scientist observed the behavior shown in the voltage versus current graph.
[Figure]
After analyzing the graph, he concluded that the voltage as a function of current is given by the equation $\mathrm{V} = 10i + i^{2}$. The graph of the electrical resistance $(R)$ of the resistor as a function of current (i) is
(A) [Figure]
(B) [Figure]
(C) [Figure]
(D) [Figure]
(E) [Figure]
QUESTION 108

While researching a resistor made of a new type of material, a scientist observed the behavior shown in the voltage versus current graph.

\includegraphics[max width=\textwidth, alt={}, center]{3e0c4b4c-e307-42cc-b665-295469a59522-07_348_579_538_352}

After analyzing the graph, he concluded that the voltage as a function of current is given by the equation $\mathrm{V} = 10i + i^{2}$. The graph of the electrical resistance $(R)$ of the resistor as a function of current (i) is\\
(A)\\
\includegraphics[max width=\textwidth, alt={}, center]{3e0c4b4c-e307-42cc-b665-295469a59522-07_310_527_1087_269}\\
(B)\\
\includegraphics[max width=\textwidth, alt={}, center]{3e0c4b4c-e307-42cc-b665-295469a59522-07_303_525_1399_271}\\
(C)\\
\includegraphics[max width=\textwidth, alt={}, center]{3e0c4b4c-e307-42cc-b665-295469a59522-07_319_525_1704_271}\\
(D)\\
\includegraphics[max width=\textwidth, alt={}, center]{3e0c4b4c-e307-42cc-b665-295469a59522-07_311_525_2017_271}\\
(E)\\
\includegraphics[max width=\textwidth, alt={}, center]{3e0c4b4c-e307-42cc-b665-295469a59522-07_308_527_2327_269}