What type of magnet does a bicycle dynamo use?
How does the magnet spin?
2006-10-17 10:14:01 · 3 answers · asked by Queenie 4 in Science & Mathematics ➔ Physics
It is an electromagnet. It is repelled one way, and attracted the other. Electricity produces a magnetic field, hence electromagnets working, and this magnetic field is attracted to the magnet on one side, then repelled as it is alternating current. It is hard to explain in words.
2006-10-17 10:23:27 · answer #1 · answered by hopernium 2 · 0⤊ 0⤋
the bicycle dynamo has fixed magnets and a commutator that revolves inside it. The two main drives are usually an extension to the commutator shaft with a serrated edge that is placed in contact with the tyre or the hub of the wheel contains the magnets and the drive spindle makes the commutator
2006-10-17 10:28:08 · answer #2 · answered by Daddybear 7 · 0⤊ 0⤋
It is a permanent magnet rotated from the bicycle wheels while the coil is stationary. It is an AC current inducted in the coils is utilized to light up
2006-10-17 11:21:39 · answer #3 · answered by Dr M 5 · 0⤊ 0⤋