The Graph in the Figure Shows the Variation of the Electric

question 3

Multiple Choice

The graph in the figure shows the variation of the electric potential V(x) (in arbitrary units) as a function of the position x (also in arbitrary units) . Which of the choices below correctly describes the orientation of the x-component of the electric field along the x-axis?

• A) E_x is positive from x = -2 to x = 2.
• B) E_x is positive from x = -2 to x = 0, and negative from x = 0 to x = 2.
• C) E_x is negative from x = -2 to x = 0, and positive from x = 0 to x = 2.
• D) E_x is negative from x = -2 to x = 2.

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