Two unlike charges of magnitude q are separated by a distance 2d . potential at a point midway betwe

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2. Electric Potential and Capacitance

easy

Two unlike charges of magnitude $q$ are separated by a distance $2d$. The potential at a point midway between them is

A

Zero

B

$\frac{1}{{4\pi {\varepsilon _0}}}$

C

$\frac{1}{{4\pi {\varepsilon _0}}}.\frac{q}{d}$

D

$\frac{1}{{4\pi {\varepsilon _0}}}.\frac{{2q}}{{{d^2}}}$

Solution

(a) Potential at mid point $O,\,\,\,V = \frac{{kq}}{d} + \frac{{k( – q)}}{d} = 0$

Standard 12

Physics

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