The given diagram shows two semi infinite line of charges having equal (in magnitude) linear charge density but with opposite sign. The electric field at any point on $x$ axis for $(x > 0)$ is along the unit vector

821-471

  • A

    $\cos \theta \,\hat i + \sin \theta \,\hat j$

  • B

    $\hat i$

  • C

    $\hat j$

  • D

    $ - \sin \theta \,\hat i + \sin \theta \,\hat j$

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