electric-charges-and-fields Question 39
Question: Q. 4. What is the electric flux through a cube of side $1 \mathrm{~cm}$ which encloses an electric dipole?
U [Delhi I, II, III 2015]
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Solution:
Ans. Zero (as net charge enclosed by the surface is zero.)
[CBSE Marking Scheme, 2015]
Detailed Answer :
In a cubic surface, the net electric charge will be zero since dipole carries equal and opposite charges. It is observed that the net electric flux through closed cubic surface will be
$$ =\frac{\text { Charge enclosed }}{\varepsilon_{0}} $$
and because the charge enclosed is zero,
$\therefore$ electric flux is also zero. 1
