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Q.

Consider  law ∮E→·dA→=qϵ0. Which of the following  is true?

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a

E→ must be the electric field due to the enclosed charge

b

If net charge inside the Gaussian surface =0, then E→ must be zero everywhere over the Gaussian surface.

c

If the only charge inside the Gaussian surface is an  electric dipole, then the integral is zero.

d

E→ is parallel to dA→ everywhere over the Gaussian  surface.

answer is C.

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Detailed Solution

ϕ=Qnet ϵ0 For dipole Qnet =0⇒ϕ=0
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