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Q.

The magnitude of electric field at a point 4cm away from a line charge of density 2x 10^-6 Cm^-1 is n x 10⁴ NC^-1. Value of n is

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Detailed Solution

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$E = \frac{λ}{2 {πε}_{0} r}$

$E = \frac{2 \times 10^{- 6} \times 9 \times 2 \times 10^{9}}{4 \times 10^{- 2}} = 9 \times 10^{5}$

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