The physics of a bike generator?

AlyBal

New member
May 2, 2011
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A generator is mounted on a bicycle to power a headlight. A small wheel on the shaft of the generator is pressed against the bike tire and turns the armature 44 times for each revolution of the tire. The tire has a radius of 0.33 m. The armature has 75 turns. Each turn has an area of 2.6 x 10-3 m2 and rotates in a 0.10 T magnetic field. The peak emf generated is 6.0 V. What is the linear speed of the bike?
 
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