Question

In the following figure distance of the point from A, when electric field intensity is zero:

• A. 20 cm
• B. 10 cm
• C. 33 cm
• D. none of these

Answer 1

Answer: (C)

Let at point. $P$ electric field intensity is zero.
$\frac{K\times 10\times 10^{-6}}{x^2}=\frac{K\times 20\times 10^{-6}}{(80-x{)}^2}$
$x=33cm$