- #1
sfdevil
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Homework Statement
Use Ampere’s law to calculate the magnetic field inside of a toroid with 850 turns. The inner radius of the rectangular coils is 3.00 cm, the outer radius is 7.00 cm.
Homework Equations
ampere's law: path integral(B*ds) over a closed path is equal to the enclosed current times mu_0
The Attempt at a Solution
by ampere's law for toroids, I get B= mu_0*N*I/(2*pi*R)
Im confused as to what the inner and outer radius have to do with this problem,
hence the cry for help :(
anyone ?