An electric dipole is placed at the centre of a sphere. Mark the … - Vidyadip

MCQ

An electric dipole is placed at the centre of a sphere.
Mark the correct options:

The flux of the electric field through the sphere is zero.
The electric field is zero at every point of the sphere.
The electric field is not zero anywhere on the sphere.
The electric field is zero on a circle on the sphere.

A
$A$ and $B$
✓
$A$ and $C$
C
$C$ and $D$
D
$B$ and $D$

✓

Answer

Correct option: B.

$A$ and $C$

$\therefore$ Net charge of electric dipole is always zero.

$\phi=\frac{\text{q}_{\text{inside}}}{\in_0}$ Here inside $= 0$
The flux of the electric field through the sphere is zero. But the electric field is not zero any where on the sphere. Take $'A\ '$ point any where on the sphere, and find the electric field on the surface. You will get non zero electric field on the sphere.

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