Two very long straight wires are set par...

Two very long straight wires are set parallel to each other. Each carries a current I in the same directions and the separation between them is 2r. The intensity of magnetic field at point P as shown in figure is ______

`(3mu_(0)I)/(8 pi r)`

`(2mu_(0)I)/(pi r)`

`(2 mu_(0)I)/(3 pi r)`

`(mu_(0) I)/(2pi r)`

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