Question

Two rings of radius 5 cm are 16 cm apart and concentric with a common horizontal axis. The ring on the left carries a uniformly distributed charge of 37 nC and the ring on the right carries a uniformly distributed charge of 37 nC. What is the magnitude and direction of the electric field on the axis halfway between the two rings?

Answer 1

The magnitude of the electric field on the axis halfway between the two rings is zero.

Step-by-step explanation:

To find the electric field on the axis halfway between the two rings, we can use the principle of superposition. The electric field from the left ring will point towards the right, while the electric field from the right ring will point towards the left. Since the rings have the same charge and are equidistant from the point, the magnitudes of their electric fields will be the same. Therefore, the total electric field at the midpoint between the two rings will be zero.