Question

October 21, 2015 has past and the Cubs did not win the World Series nor did you get your hoverboard. Clearly, the "flux capacitor" is not working.1 Based on visual inspection, the flux capacitor operates by combining three streams of high magnetic field At a central point. If each stream has a magnetic field of 1.21 T and the intercepting surface has an area of 0.005 m2, find the magnetic flux for a stream having an angle of 0 degree between the magnetic field and the normal to the area, and a stream having an angle of 60 degree between the magnetic field and the normal to the area. Gandalf refuses to touch the One Ring but he's fine with testing it. He runs a wire next to the Ring (see diagram), and that wire initially has no current running through it. Then he sets a 9.0 A current through the wire (and "up" in the diagram), which means the Ring now has a magnetic field flowing through it. Assume that this magnetic field is the same everywhere through the Ring's area and that the magnitude of this magnetic field is just found by Ampere's Law at the center of the Ring, which is 7.0 cm away from the wire. If the diameter of the Ring is 1.50 cm and the current goes from 0 A to 9.0 A in 3.0 Times 10^-4 s, find the average induced emf in the Ring. And... is the current direction clockwise or counterclockwise in the diagram?

Answer 1

Ca) F B. A L. A. cos 60 Lb 2 2) dt aun scen auio, Thus 2d dt 1O 2d At 9-O X구