Question

The linear charge density upon the semi-circle ring, on both side is same in magnitude, the electric field at $O$ is along

• A. $\hat{i}$
• B. $-\hat{i}$
• C. $\hat{j}$
• D. $-\hat{j}$

Answer 1

The correct option is C $\hat{j}$

The linear charge density up on the semi-circle ring electric field at $0$ is along $\hat{j}$ because it will be perpendicular to the curve of the charge semi - sphere.