A rectangular loop carrying current I is placed on the xy-plane. Assume that the corners of the loop are at (0,0),(a,0), (0,b), (a,b). Find the magnetic field intensity above the loop. Specifically,let a=2,b=1:

Select the correct expression for the e.m.f. of a metallic disk or radius r placed with its plane perpendicular to the magnetic field B, and rotating with the frequency f . Select one: = B°ar° f a. ɛ = b. ɛ = Bar1f = Bar² f² U C. ɛ = O d. ɛ = Bar² f

The graph shows the magnitude B of a uniform magnetic field that is perpendicular to the plane of a conducting loop. Rank the four regions indicated on the graph according to the magnitude of the emf induced in the loop, from least to greatest. O a. 4, 3, 2, 1 O b. 2, 4, 3, 1 O c. 1, 2, 3, 4 O d. 4, 3, 1, 2 O e. 1, 3, 4, 2 3

2. In a system involving cylindrical symmetry, how do you use different kinds of Bessel functions (Bessel functions, modified Bessel functions, and Hankel functions) to describe the radial-dependent electromagnetic field?