- #1
cdummie
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Homework Statement
Faraday's disk with radius of axle r1 and radius of disc r2 is shown in the picture below. Disc rotates in the homogenous magnetic field whose vector B is vertical to the disc. If disc is spinning 1000 rpm find induced voltage between r1 and r2 and what is maximal value of current through the resistor. Known values are: B=1T, r1=1cm, r2=20cm and R=10 Ω.
Homework Equations
eind=∫(v×B)dl
The Attempt at a Solution
Eind=v×B=vBsin(v,B)
if there's 1000 rpm that is 16.7 rps and that is what i don't know, what to do next?