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Calculating the current in a solenoid 
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#1
Sep2811, 03:09 PM

P: 1

1. The problem statement, all variables and given/known data
A shortcircuited solenoid of radius b with n turns rotates at an angular velocity about the diameter of one of the turns in a uniform magnetic field B. The axis of rotation is perpendicular to the magnetic field direction. The resistance and the inductance of the solenoid are equal to R and L, respectively. Find the current in the solenoid as a function of time 2. Relevant equations Hint eq: phi = normal vector (dot) Magnetic field (B) s 3. The attempt at a solution i cant seem to figure out where to start. in order to find the current in the solenoid, do i have to first start with finding the magnetic field (or a specific value of B)? and then plug that into the above eq? 


#2
Sep2811, 08:09 PM

P: 1,368

See the first page of,
http://hyperphysics.phyastr.gsu.edu...ic/farlaw.html There is a small error in the first page of the link above, can you find it? Once you get the induced sinusoidal voltage you can treat the problem as a series circuit consisting of a sinusoidal voltage a resistance and an inductor? Found via, http://www.google.com/webhp?hl=en#hl...iw=721&bih=408 See also, http://www.google.com/search?hl=en&s...og&sa=N&tab=wi 


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