Question 1.23)
An infinite line charge produces a field of 9 × 104 N/C at a distance of 2 cm. Calculate the linear charge density.
The electric field produced by the infinite line charges at a distance d having linear charge density λ:
E=λ2πε0d⇒λ=2πε0dEλ=0.02×9×1042×9×109=10μC/m
The linear charge density is 10 μC/m.
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