• Support PF! Buy your school textbooks, materials and every day products Here!

Magnetic field work

  • #1
672
0

Homework Statement


A conductor that is 2 m long and is caring a current of 3 A is placed parallel to the zaxis at a distance ρ0= 10 cm as shown in Figure 2. If the magnetic field in the region is cos(ϕ/3)Up Wb/m^2, how much work is required to rotate the conductor one revolution about the z-axis?



Homework Equations


W=Fd
torque=m x B where m=magnetic moment
m=IS

The Attempt at a Solution


Well I tried formula for surface area of an elliptical cylinder pi(Major radius)(minor radius) which is S but I dont have B. am I going about it wrong? Anyways once I did this I was planning on multiplying it by the current given. And then multiply that by the length of cylinder 2m which will give me the torque force which I can then find the for d=distance traveled in one revolution and multiplt that by the torque to give me work.
 

Attachments

Answers and Replies

  • #2
672
0
Is this a bad question?
 
  • #3
rude man
Homework Helper
Insights Author
Gold Member
7,631
717
Top