A semicircular arc of radius r is charged uniformly and the charge per unit length is λ. The electric field at the centre is:

C

Chandan Das

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Q. A semicircular arc of radius r is charged uniformly and the charge per unit length is λ. The electric field at the centre is:

(A) \(\frac{λ}{2λε_0r^2}\)
(B) \(\frac{λ}{4πε_0r}\)
(C) \(\frac{λ^2}{2πε_0r}\)
(D) \(\frac{λ}{2πε_0r}\)

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✅ Correct Answer: (B) \(\frac{λ}{4πε_0r}\)

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