The electric field above a uniformly charged nonconducting sheet is E. If the nonconducting sheet is now replaced by a conducting sheet, with the charge same as before, the new electric field at the same point is :
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a
2E
b
E
c
E2
d
None of these
answer is A.
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Detailed Solution
due to nonconducting sheet E=σ2ε0due to conducting sheet E'=σε0=2E