Calculating the current in a solenoid


by couponcoocoo
Tags: current, solenoid
couponcoocoo
couponcoocoo is offline
#1
Sep28-11, 03:09 PM
P: 1
1. The problem statement, all variables and given/known data

A short-circuited 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?
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Spinnor
Spinnor is offline
#2
Sep28-11, 08:09 PM
P: 1,360
See the first page of,

http://hyperphysics.phy-astr.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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