- #1
Kudo Shinichi
- 109
- 1
Homework Statement
A current i flows through a triangular loop in the y-z plane. The loop is situated in a uniform magnetic field B.
http://s5.tinypic.com/14csew3.jpg
a) Find the total force on the loop when the magnetic field is in i) the x-direction, and ii) the y-direction
b) What is the magnetic dipole moment of the loop? (use mu=i x area and the appropriate direction)
c) What is the torque on the loop and how will it tend to turn when the field is in i) the x-direction, and ii) the y-direction?
The Attempt at a Solution
a)x-direction:
F=current x length x uniform magnetic field x sinθ
F=-i x B x l
y-direction:
F=i x B x l cos 45
b) area of a triangle: 1/2(b*h)
since the angle is 45 degree so both height and base are the same.
1/2(l^2)
mu=i*1/2(l^2)
however, I don't really know how to figure out the direction for this question.
c) torque=number of loops*current*area*uniform magnetic field
x-direction:
torque=1*i*1/2(l^2)*B
y-direction:
torque=1*i*cos45*1/2(l^2)*B
I am not really sure whether I did the problem correctly or not...and for some questions I only know how to do part of them
Any comment or help would be great! Thank you very much.
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