The Graph in the Figure Shows the Variation of the Electric

question 40

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

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