Question

A very long uniform line of charge has charge per unit length 4.90 μC/m and lies along the x-axis. A second long uniform line of charge has charge per unit length -2.50 μC/m and is parallel to the x-axis at y1 = 0.408 m .

What is the magnitude of the net electric field at point y2 = 0.220 m on the y-axis?

Answer 1

Use super position.