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Q.

In case of infinite long wire electric field is proportional to

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a

$r^{o}$

b

$\frac{1}{r}$

c

$\frac{1}{r^{3}}$

d

$\frac{1}{r^{2}}$

answer is A.

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Detailed Solution

$E = \frac{λ}{2 {πε}_{o} r}$

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In case of infinite long wire electric field is proportional to