- #1
betamu
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Homework Statement
A coil has 460 turns and self-inductance 7.50 mH. The current in the coil varies with time according to i=(680mA)cos[πt/(0.0250s)].
What is the maximum average flux through each turn of the coil?
Homework Equations
##\varepsilon_{ind} = N \frac{d\Phi}{dt} , \varepsilon_{ind} = L \frac{di}{dt} ##
The Attempt at a Solution
I set the above equations equal to find ##N \frac{d\Phi}{dt} = L \frac{di}{dt} ## and integrated both sides wrt t to find ##N\phi = Li##, input the given equation for i with the entire cos() portion = 1, as it is asking for the maximum average flux, set ##N = 460## and solved for ##\Phi = 1.11*10^{-5}## but this doesn't seem to be the correct answer.
Is it the "average" flux bit that's throwing me off?