Magnetostatics 3. A ring torus exists with total static charge Q and rotates along the symmetry axis at angular frequency w. The ring torus also has N turns with current / through each turn. The radius of each turn of the torus is r while the distance from the origin to the center of each turn is R. a. What is B at the origin and why? What is B at the center of the current loops of the torus at a distance R from the origin and why? What is B at a distance zo >> R along the symmetry axis and why? b. C.

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequen…