{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Lec-13 - Previous Lecture dc motor Biot-Savart Law B of a...

Info icon This preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon
Previous Lecture dc motor Biot-Savart Law B of a current loop – p.
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Today Results of Exam Ampere’s Law Magnetic materials – p.
Image of page 2
Results of HT-1 Score Number of Students mean 61 range 13 - 99 – p.
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Results of HT-1 Score Number of Students mean 61 range 13 - 99 A B C – p.
Image of page 4
Ampere’s Law B · d l = µ 0 I encl The line integral of B around a closed loop is equal to µ 0 times the current that passes through the loop. – p.
Image of page 5

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
B of a Solenoid (1) – p.
Image of page 6
B of a Solenoid (2) Solenoid has n turns/meter, so for length l there are a total of N turns, where N = nl. Apply Ampere’s Law to dashed loop: B · d l = b a B · d l neglect + c b B · d l B d l + d c B · d l BL + a d B · d l B d l B · d l = Bl = µ 0 NI = µ 0 nlI B = µ 0 nI – p.
Image of page 7

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
B of Toroid N = number of loops Path 1 (inside toroid): B · d l = 2 πrB = µ 0 I encl I encl = NI B = µ 0 NI 2 πr = µ 0 nI where n = N/ 2 πr Path 2 (outside toroid): B · d l = 2 πrB = 0 B = 0 – p.
Image of page 8
Different kinds of magnetism Ferro-, Para-, Dia- – p.
Image of page 9

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Different kinds of magnetism Ferro-, Para-, Dia- Warning! You need quantum mechanics to do this right. I’m only going to give you a rough picture.
Image of page 10
Image of page 11
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

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