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A very long uniformly charged thread or...

A very long uniformly charged thread oriented along the axis of a a circle of radius `R` rests on its centre with one of the ends. The charge of the thread per unit length is equal to `lambda`. Find the flux of the vector `E` across the circle area.

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Verified by Experts

The correct Answer is:
`[|phi| = (1)/(2)lambdaR//epsi_(0)`. The sign of `Phi` depends on how the direction of the normal to the circle is chosen. ]
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