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How to Visualize Electric Fields

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Question

Calculate electric field intensity at a point on the axis which is at distance $x$ from the centre of half ring, having total charge $Q$ distributed uniformly on it. The radius of half ring is $R$ .

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Solution

Find electric field intensity
distance $= x$
Charge $= Q$
The radius of half ring $= R$
$E = \frac{1}{a π E_{0}} \frac{Q^r}{x^{2}}$

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