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Q.

A long thin flat sheet has a uniform surface charge density $σ$ . The magnitude of the electric field at a distance ‘r‘ from it is given by

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a

$σ / ε_{0}$

b

$σ / ε_{0} r$

c

$σ / 2 ε_{0}$

d

$σ / 2 ε_{0} r$

answer is B.

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Detailed Solution

$E = \frac{σ}{2 ε_{0}}$

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