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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:

A

`lambda//5piin_(0)d`

B

`lambda//4piin_(0)d`

C

`3lambda//16piin_(0)d`

D

`3lambda//8piin_(0)d`

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