Question

A charged disk of radius 100 m and a ring of radius 0.21 m are 0.2 m apart and have a common horizontal x-axis. The charged disk on the left has a total charge of 52 μC
(note μ-> micro) distributed evenly over its area and the ring on the right carries a uniformly distributed charge of 5 nC (nano).

Approximately what is the magnitude of the electric field due to the disk and the ring on the x-axis halfway between the two bodies?
Assume that the radius of the disk is much greater than the distance to the observation point from the disk.

1.68e+02 V

2.64e+02 V

1.87e+08 V

1.87e+02 V

2.30e+02 V

Answer 1