An infinite sheet of charge has charge density σ = +0.7 μC/m2. You correctly use Gauss's law to find the magnitude of the electric field outside the line of charge is E(x) = σ2 ε0. Which integral below will correctly calculate the potential difference V(x = 7 m)−V(x = 12 m) ? −∫012σ2 ε0 dx −∫∞7σ2 ε0 dx −∫127σ2 ε0 dx −∫07σ2 ε0 dx −∫∞12σ2 ε0 dx −∫127σ2 ε0⋅xdx