An infinite wire is bent in the U shape. It has a uniform linear charge density 'm'=9 nC/m. The Electric field at the center of the semi-circle formed at the base is??

Dear Eshita,

 E = λ / 2∏ε0 * R here . λ = Q/∏R ,  (λ - linear charge density )

  = 9 * 10^-9 / 2 * 8.85 * 10^-12 

 = 508.4 N/C

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