Homework Statement
A small engine flywheel rotates at 2000rpm and has 4 permanent magnents pressed into the flywheel at a radius of 10cm spaced 90deg apart 1.2cm diameter magnets. A 1.2cm diameter pickup coil with 500 turns is at the edge of the flywheel. Max voltage detected is .76 volts...
Yeah it was in ohm/meters. I Believe I have figured out where I had it screwed up.
It ended up being 9.42 meters of wire to keep under 10 amps, and resistance at 635deg C was 7620 ohms which ends up being 2 watts. The resistance and the temp coefficient were in the book. Thanks! I will...
Homework Statement
Build a heater that runs on 120vac no more than 10 amps. How many watts, 1mm nichrome wire, how long will it have to be at 20deg C. What will the resistance be at 1200deg F. What is the new power at the new resistance.
Homework Equations
R=V/I P=E/I R=L/A...