Questions
A semicircular arc of radius ‘a’ is charged uniformly and the charge per unit length is
detailed solution
Correct option is D
dE=Kλdxa2 dEnet=Kλdxa2cosθ E=∫-π2π2Kλdθacosθ=λ2π∈0a
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Similar Questions
A thin glass rod is bent into a semicircle of radius r. A charge +Q is uniformly distributed along the upper half, and a charge -Q is uniformly distributed along the lower hall as shown in figure. The electric field E at P, the center of the semicircle, is
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