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A continuous line of charge oflength 3d ...

A continuous line of charge oflength 3d lies along the x-axis, extending from `x + d` to` x + 4d` . the line carries a uniform linear charge density `lambda`.

In terms of d,`lambda` and any necessary physical constants, find the magnitude of the electric field at the origin:

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A continuous line of charge of length 3d lies along the x-axis, extending from x + d to x + 4d, The line carries a uniform linear charge density lambd . In terms of d, lambda and any necessary physical constant find the magnitude of the electric field at the origin.

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