Find the electric field at the centre of a uniformly charged semicircular ring of radius R. Linear charge density is `lamda`

Find the electric field at the centre of a semicircular ring if it is uniformly positive charged.

Find the electric field at centre of semicircular ring shown in figure . .

In the given arrangement find the electric field at C in the figure. Here the U-shaped wire is uniformly charged with linear charge density lambda . [0]

Electric field at centre O of semicircule of radius 'a' having linear charge density lambda given is given by

Draw the electric field vs distance (from the centre ) graph for (i) a long charged rod having linear charge density lamda gt 0 (ii) spherical shell of radius R and charge Q gt 0 .

Electric field at a point of distance r from a uniformly charged wire of infinite length having linear charge density lambda is directly proportional to

The electric field at the centre of a uniformly charged ring is zero. What is the electric field and potential at the centre of a half ring if the charge on it be Q and its radius be R ?

An infinitely long line charge is bent in U shape as shown in figure. The semicircular part has radius R and linear charge density is lamda C//m . Using the results obtained in last two problems, calculate the electric field intensity at centre of the circle (point O)