transgalactic
Banned
toroid question..
https://i31.tinypic.com/2061tue.jpg
i tried to solve A like this:
[latex]B=\frac{\mu _0NI}{2\pi r}\\[/latex]
[latex]\phi=BA=LI\\[/latex]
[latex]A=(b-a)h\\[/latex]
[latex]\phi=\frac{\mu _0NI}{2\pi a}(b-a)h=LI[/latex]
I (current) cancels out
where is the mistake here
the solution is totaly different
https://i31.tinypic.com/2061tue.jpg
i tried to solve A like this:
[latex]B=\frac{\mu _0NI}{2\pi r}\\[/latex]
[latex]\phi=BA=LI\\[/latex]
[latex]A=(b-a)h\\[/latex]
[latex]\phi=\frac{\mu _0NI}{2\pi a}(b-a)h=LI[/latex]
I (current) cancels out
where is the mistake here
the solution is totaly different
Last edited: