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A funny question in electromagnetism!

Started by vineet_kiran, March 24, 2014, 10:29:33 PM

Previous topic - Next topic

0 Members and 2 Guests are viewing this topic.

vineet_kiran

A funny question which requires serious answer!

TinselKoala

The magnetic field depends on the product (multiplication) of the number of turns and the current amperage in the turns. The current amperage for a given applied voltage will depend on the resistance of the wire. Fine wires have greater resistance per unit length than heavy wires do. So there is a tradeoff between number of turns, thickness of wire (resistance per unit length) and magnetic field produced.

forest

You touched very important topic ! The battle is about the choke which is high inductance yet very low ohmic resistance.
Any thoughts ? I have one and if you guess close to mine concept I will open source it here and for ever  ;) 
Game start ?

Jeg

Hey guys
If you cut the coil and supplying it the way you describe, then every turn will have  the same voltage potential and there is no step up or step down effects like coils. It is something else. It is like a superconductor with resistance close to zero but it is a straight conductor and not a coil. Perhaps a coil with every turn consist of hundreds of thin wires fits better to what you are trying to describe.


vineet_kiran

Quote from: forest on March 25, 2014, 05:20:40 AM

Game start ?


No!!!   I agree with TK :-  "So there is a tradeoff between number of turns, thickness of wire (resistance per unit length) and magnetic field produced."

If you make any inductance of low ohmic resistance it will become a short circuit and you will not be able to maintain required voltage and current in the choke.

I have shown only one coil in my drawing.  If you connect several such coils in series or parallel, then you may get some resistance to maintain required voltage and current.