Question

An infinite long semicircular tube is given as shown below one half is given a surface charge density +σ and other half is given charge density −,σ . Electric field at a point on axis would b

Answer 1

$(A)\;\frac {\sigma}{\pi\in_0} \hat j \\ (B) \;\frac{\sigma}{pi \in_0} \hat i \\ (C)\;\frac {-\pi \in_0} \hat i \\(D)\;\frac {\sigma}{pi \in_0} \hat jae $

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