Torque & Circular Loop

  • Thread starter dgresch
  • Start date
  • #1
7
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The maximum torue experienced by a circular, one-turn, coil in a 0.75T magnetic field is 8.4x10-4Nm. If the coil current is 3.7A, find the coil wire length.

Homework Equations



τ=Fr
F=ILBsinθ ?
r=L

The Attempt at a Solution



(8.4x10-4Nm)=[(3.7A)L(0.75T)sin90]L
L=0.017m

Can I do this? I don't know how else I'd get the length with the given values.
 

Answers and Replies

  • #2
7
0
Never mind, I figured out its just B=u0NI/2r and I take C=2pie *r to give me length
 

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