Consider a ring and a disk parallel to each other with their central axes along a common line. The disk, located at the origin (point O), has a uniform charge density σ = -4 nC/m² and radius Rdisk = 14 m. The ring, located at x=d, has a uniform charge aring --8 nC and radius Rring = 4 m. The magnitude of the total electric field at the center of the ring (point A) is E = 174 N/C. Disk Ring A B d X 1.  Find the charge of the disk disk = 2.  Find the linear charge density of the ring Aring = 3.  Find the distance between the ring and the disk d = 4.  The total electric field vector Etotal at x = d is in the direction. 5. The total electric field vector Eroral at x=d+2 is in the direction.

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.