Figure shows the variation of electric field intensity $E$ versus distance $x$. What is the potential difference between the points at $x=2 \,m$ and at $x=6 \,m$ from $O$ is ............. $V$
Medium
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(a)
$V_2-V_6=-\int E d r$
$V_2-V_6=(10)(2)+\frac{1}{2}(10)(2)=30$
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