ECE3209-2009-hw8

ECE3209-2009-hw8 - ECE 3209 Electromagnetic Fields...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ECE 3209 Electromagnetic Fields University of Virginia Fall 2009 Homework # 8 Magnetic Fields Due: Friday, November 6 1. Using the Biot-Savart Law, find the magnetic flux density ( ~ B ) at point P for each of the steady current configurations given below: (a) Cheng P.6-11. A hairpin turn (b) On the axis of a tightly-wound finite solenoid consisting of n turns per unit length wrapped around a cylindrical tube of radius a and carrying current I . Express your answer in terms of the angles 1 and 2 . 2. Cheng P.6-13. A thin conducting wire is bent into the shape of a regular polygon of N sides. A current I flows in the wire. Show that the magnetic flux density at the center is, ~ B = n NI 2 b tan N , where b is the radius of the circle circumscribing the polygon and n is a unit vector normal to the plane of the polygon. Show that as N becomes very large, this result reduces to the result for the magnetic flux density at the center of a circle of radius b . 3.3....
View Full Document

This note was uploaded on 10/16/2010 for the course ECE 309 taught by Professor Weikle during the Fall '08 term at UVA.

Page1 / 3

ECE3209-2009-hw8 - ECE 3209 Electromagnetic Fields...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online