A plastic rod has a uniformly distributed charge q the rod has been bent in a 2 theta circular arc of radius R.What is the electric field and potential due to rod at point p

Q. Figure shows a plastic rod having a uniformly distributed charge $Q$. The rod has been bent in a ${120}^o$ circular arc of radius $r$. In terms of $Q$ and $r$, what is the electric field $\overrightarrow{E}$ due to the rod at point $P$?

Q. A rod is bent into a semi-circular arc of radius R. The rod has a uniform linear charge distribution $\lambda$. The potential at the centre of the arc, point P is

Q. Figure shows a rod $AB$, which is bent in a ${120}^{\circ }$ circular arc of radius $R$. A charge $(-Q)$ is uniformly distributed over rod $AB$. What is the electric field $\overrightarrow{E}$ at the centre of curvature $O$ ?

Q. The plastic rod in the figure forms a half-circle and has charge $-Q$ uniformly distributed along its length $L$. Find the electric field at the origin.

Q. A wire is bent into semicrcular arc of radius R.The rod has a uniform linear charge distribution $\lambda$. The potential at the center is