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ma18
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Homework Statement
A circular coil has N equal loops with diameter C. Each loop has resistivity η and diameter d.
There is a field on the central axis of B(t) = B_0 sin(ωt).
Find the induced current (ignoring other fields)
Homework Equations
emf = -d/dt * flux(t)
i = emf/R
R = η*l/A
The Attempt at a Solution
emf total = N * -d/dt ∫B dot dA = N * BA = N * B(t) * (pi*(C/2)^2)
R = η * (2*pi*d/2)/ (pi*(d/2)^2)
i = emf /R
I know I am doing something wrong and missing something, could somebody please tell me where I am going astray?
Thanks
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