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  4. The variation of electric potential with distance from a fixed point is shown in figure. What is the value of electric field at x=2 m

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Q. The variation of electric potential with distance from a fixed point is shown in figure. What is the value of electric field at $x=2\, m$Physics Question Image

AP EAMCETAP EAMCET 2020

Solution:

According to given diagram, potential is constant in region $A B$.
image
i.e., $V=$ constant
$\therefore $ Electric field at $x=2 m$ (at point $C$ )
$E=\frac{-d V}{d x}=0 [\because V=$ constant $]$