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

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Q. In the following figure distance of the point from A, when electric field intensity is zero:Physics Question Image

Rajasthan PMTRajasthan PMT 2000Electric Charges and Fields

Solution:

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}} $
$x =33 \,cm$