In a region of electric field, the electric potential varies along x-axis according to the graph shown in the figure. Then x-component of electric field (in N/C) at x=0.5 m and 1.2 m respectively.

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-5,+20

+5,-20

-5,-20

+5,+20

answer is D.

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Detailed Solution

Ex→=dvdx ∴At x=0.5 m, Ex=-51Ne=+5Ne At x=1.2 m,Ex=--101.5-1Ne=+20Ne.

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