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royman19
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Homework Statement
A radio antenna that receives an AM radio station that emits at 800 kHz is constituted of an inductor of 120 turns with a radius of 0.6cm. The inductor is home to an iduced emf du to a magnetic field oscillating from the radio wave. The magnetic field is [tex]\vec{B}[/tex]=1.0*10[tex]^{-5}[/tex]sin(2[tex]\pi[/tex]ft)[tex]\vec{k}[/tex]. What is the induced emf in the inductor? We suppose that the magnetic field is oriented according to the inductor's axe.
Homework Equations
emf = -Nd[flux]/dt
d[flux] = int[B*dA]
The Attempt at a Solution
I tried to integrate and find the flux, but I am not that great at calculus, but then what I really don't get is that I am going to have to derive to find the emf. It seems like I am going in circles. By the way, the final answer is -0.682cos(5.03*10[tex]^{-6}[/tex]t) V.
Thanks for the help!