- #1
wk1989
- 32
- 1
Hi, I have a bit of a problem understanding one of the solutions for my assignment.
Normally we use the equation
F = iL X B
to find the force of a magnetic field on a wire with a current.
One of the questions asks to find the force on a section of wire between x=3 and x= 1, the wire's current is in the the negative x direction. The magnetic field is something like B=3i+8.0x^2
They used integration to solve the problem, integrating the change of force from 1 to 3. I'm wondering why this is used? Is it because the magnetic field is not uniform (it's in terms of x)? If the magnetic field is uniform, could we just have done F = iL x B with 2 being the L?
Thanks in advance!
Homework Statement
Normally we use the equation
F = iL X B
to find the force of a magnetic field on a wire with a current.
One of the questions asks to find the force on a section of wire between x=3 and x= 1, the wire's current is in the the negative x direction. The magnetic field is something like B=3i+8.0x^2
They used integration to solve the problem, integrating the change of force from 1 to 3. I'm wondering why this is used? Is it because the magnetic field is not uniform (it's in terms of x)? If the magnetic field is uniform, could we just have done F = iL x B with 2 being the L?
Thanks in advance!