Two electric charges $12\mu C\ and - 6\mu C$ are placed $20\ cm$ apart in air. There will be a point $P$ on the line joining these charges and outside the region between them, at which the electric potential is zero. The distance of $P$ from $- 6\mu C$ charge is

Question

Dr. Abubacker · Accepted Answer

(c) Point $P$ will lie near the charge which is smaller in magnitude $i.e. - 6\mu C$. Hence potential at $P$
$V = \frac{1}{4\pi\varepsilon_{0}}\frac{\left( - 6 	imes 10^{- 6} ight)}{x} + \frac{1}{4\pi\varepsilon_{0}}\frac{(12 	imes 10^{- 6})}{(0.2 + x)} = 0 \Rightarrow x = 0.2\ m$

Q. Two electric charges $12\mu C\ and - 6\mu C$ are placed $20\ cm$ apart in air. There will be a point $P$ on the line joining these charges and outside the region between them, at which the electric potential is zero. The distance of $P$ from $- 6\mu C$ charge is

Explanation

Reviewed by Dr. Abubacker

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