Question

# In the figure, there are four arcs carrying positive and negative charges. All of them have same charge density $$\lambda$$. Pick incorrect statement(s).

A
The net dipole moment for the given charge distribution is (45)λR2.
B
The resultant electric field at the center is zero.
C
If a uniform E is switched on perpendicular to the plane, charge distribution starts rotating about X-axis.
D
Potential at the centre of the given charge distribution is non-zero.

Solution

## The correct options are B The resultant electric field at the center is zero. C If a uniform $$\overrightarrow{E}$$ is switched on perpendicular to the plane, charge distribution starts rotating about X-axis. D Potential at the centre of the given charge distribution is non-zero.PhysicsNCERTStandard XII

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