2007-02-21 09:08:03 · 4 answers · asked by silent1 4 in Science & Mathematics ➔ Physics
The looped coil needs insulating.
The current produced is directly proportional to the number of loops [n]v on the dynamo spindle.
If they're not insulated from each other they will merge to become simply one really thick [but still only n=1 rather than n=100] loop.
It's best if the insulation is thin. Teflon coating is best, as used on the wiring in Apollo missions. You can get more loops on. Thick plastic coating is rubbishy.
Though the contacts need to be stripped, to make contact. Well, duh...
2007-02-21 10:05:48 · answer #1 · answered by BIMS Lewis 2 · 0⤊ 0⤋
The dynamo consists of a coil. If the wire is not insulated then the any part of the coil touching itself would short out across the adjacent loops rather than forcing the current to travel around the the coil
2007-02-21 09:11:37 · answer #2 · answered by davidbgreensmith 4 · 0⤊ 0⤋
Like all electric circuits they have to be insulated. The electric current will just escape by touching other wires or conductive objects.
2007-02-21 09:19:31 · answer #3 · answered by mad_jim 3 · 0⤊ 0⤋
you dont have to
you can make one thick open ring of cupper and the dynamo still works. but it will give a very very low voltage , not eniough for most appliucation
the more windings youy have the higher the voltage
2007-02-21 09:12:05 · answer #4 · answered by gjmb1960 7 · 0⤊ 0⤋