Two rings of radius 5 cm are 20 cm apart and concentric with a common horizontal x-axis. The ring on the left carries a uniformly distributed charge of +35 nC, and the ring on the right carries a uniformly distributed charge of -35 nC.
What is the electric field due to the right ring at a location midway between the two rings?
E^^->_(right) = < 1, 2, 3 > N/C