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Electric Potential at a Point in Space Due to a Point Charge Q

Draw a plot s...

Question

Draw a plot showing the variation of (i) electric field $(E)$ and (ii) electric potential $(V)$ with distance $r$ due to a point charge $Q$ .

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Solution

The electric field due to point charge Q is $E = k Q / r^{2}$ and the potential is $V = k Q / r$
Thus, the graph E,V vs r will be as shown in figure.

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