homework6 - Harvard University Department of Physics Spring Semester 2009 Physics 15b Electricity Magnetism Problem Set#6 Due Friday at 4 PM 1(Purcell

homework6 - Harvard University Department of Physics Spring...

This preview shows page 1 - 2 out of 2 pages.

Harvard University Department of Physics Spring Semester 2009 Physics 15b Electricity & Magnetism Problem Set #6 Due Friday, March 20, 2009 at 4 PM 1. (Purcell 6.4) A long wire is bent into the hairpin-like shape shown in the figure. Find an exact expression for the magnetic field at the point P which lies at the center of the half-circle. Purcell 6.4 P r I 2. (Purcell 6.8) A wire carrying current I runs down the y axis to the origin, thence out to infinity along the positive x axis. Show that the magnetic field in the quadrant x > 0, y > 0 of the xy plane is given by B z = I c 1 x + 1 y + x y x 2 + y 2 + y x x 2 + y 2 3. (Purcell 6.14) A coil is wound evenly on a torus of rectangular cross section. There are N turns of wire in all. Only a few are shown in the figure. With so many turns, we shall assume that the current on the surface of the torus flows exactly radially on the annular end faces, and exactly longitudinally on the inner and outer cylindrical surfaces.
Image of page 1
Image of page 2

You've reached the end of your free preview.

Want to read both pages?

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Stuck? We have tutors online 24/7 who can help you get unstuck.
A+ icon
Ask Expert Tutors You can ask You can ask You can ask (will expire )
Answers in as fast as 15 minutes