The following figure shows a rectangular current loop that carries a current I.
Evaluate in terms of and I for path A.
Evaluate in terms of and I for path B.
Evaluate in terms of and I for path C.
Evaluate in terms of and I for path D.
A nonconducting hard rubber circular disk is painted with a uniform surface charge density. The disk radius is 20.00 cm, and its height is 2.00 cm. The angular speed of the disk’s rotation is 400 rad/s and the charge density on the disk is 1.00 C/m2. Find the magnitude of the magnetic field produced by the disk.
Use Ampere’s law to evaluate for the current configurations and paths shown in each of the following figures.