Electrical ?

teddy52food · Dec 30, 2008

A ? for John T or anyone else that knows electricity. Can you mechanically explain how does the current know which way to go (flow) when you pass a wire conductor through a magnetic field?

Bus Driver · Dec 30, 2008

Here is an explanation.
Flemings

John T · Dec 30, 2008

Teddy, Wayyyyyyyy back at Purdue in the late sixties we used what was called the "Righ Hand Screw Rule" which it appears is what the good Bus Drivers article explains better n I ever could..... Of course, manetism and electricity are well related, and the magnetic fields North/South Magnetic Polarity is what determines the resultant induced voltage, resultant current flow and Electrical Polarity. Thats why a generator needs to be Polarized in the corect North/South Magnetic Polarity so once the armature (coil of wire) spins inside it the correct corresponding Electrical Polarity is achieved so current flows into n charges the battery

Great question, has to be a short answer here cuz it takes books to explain it completely

John T

teddy52food · Dec 30, 2008

The right hand rule gives the observed results, but how does the current know which way to go? My E-mail is open.

KEB1 · Dec 30, 2008

In very simple terms, the physical interaction between a changing magnetic field (which can be either a changing field applied to a stationary conductor, or a conductor moving through a stationary field) and mobile charges in a conductor result in a force applied to to the mobile charges. The mobile charges move in the direction that would attempt to cancel the incident field.

If you want a physics explanation, look up Maxwell's Equations. Just don't ask me to interpret them in layman's terms...

James Clerk Maxwell was an English physicist who first defined the relationship between magnetism and electricity.

Keith

Electrical ?

teddy52food

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Bus Driver

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John T

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teddy52food

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KEB1

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