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Unformatted text preview: 17. The magnitude of the electric ﬁeld produced by a uniformly charged inﬁnite line is E = λ/2πε0 r, where
λ is the linear charge density and r is the distance from the line to the point where the ﬁeld is measured.
See Eq. 24-12. Thus,
λ = 2πε0 Er = 2π (8.85 × 10−12 C2 /N · m2 )(4.5 × 104 N/C)(2.0 m) = 5.0 × 10−6 C/m . ...
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