MHT CET Physics question

Physics Electric Charges and Fields MHT CET

An infinite line charge produces a field of at a distance of 2 cm. The linear charge density is

(A)
(B)Correct
(C)
(D)

Answer: (B)

Solution

\dfrac{Er}{2k}\dfrac{7.182×10^8×0.02}{2×9×10^9}10^{-4}$\

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Question ID VK-075717