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An infinite line charges produces a fiel...

An infinite line charges produces a field of `9xx 10^(4) N//C ` at a distance of 2cm . Calculate the linear charge density.

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Here `E= 9xx10^(4) N//C and r=2 cm =0.02 m . `
As for an infinite line charges electric field at a point is ` E=( lambda)/(2pi in_0 r) `
`rArr ` Linear charge density `lambda =2piin_0 rE`
` =2xx 3.14 xx8.85 xx10^(-12) xx0.02 xx9xx10^(4) =10^(7) Cm^(-1) =0.1mu Cm^(-1) `
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