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Q. Potential and field strength at a certain distance from a point charge are $ 600\,V $ and $ 200\,N/C $ . Distance of the point from the charge is

J & K CETJ & K CET 2006

Solution:

Electric field $E=-\frac{d V}{d x}$
Given, $V=600$ volt, $E =200 \,N / C$
$\therefore d x=\frac{600}{200}=3\, m$