Free Republic
Browse · Search
General/Chat
Topics · Post Article

To: Kirkwood

He is in that if you place a wire in a stationary magnetic field and didn’t move it and then tried to measure the current you would read nothing, no current, no emf. You only get current when one moves perpendicular toward the other. What he is doing however is ignoring the movement part. If you place a wire in a constantly changing magnetic field(ie a power generating turbine) then you will measure the EMF, current etc.


40 posted on 08/16/2009 11:51:24 AM PDT by aft_lizard (Barack Obama is Hugo Chavez's poodle.)
[ Post Reply | Private Reply | To 38 | View Replies ]


To: aft_lizard

You’re wrong, too. The electric field coexists with the magnetic field. The two fields are fundamentally and immutably bound. You are confusing current, the flow of electrons, with an electric field. You don’t need movement of a wire to create an electric field. The field already exists. The movement of the wire doesn’t actually “create” electricity in a fundamental sense, rather it is reacting to the presence of an electric field in space and that causes a current to flow in response through the wire.


66 posted on 08/16/2009 1:48:42 PM PDT by Kirkwood
[ Post Reply | Private Reply | To 40 | View Replies ]

Free Republic
Browse · Search
General/Chat
Topics · Post Article


FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson