2006-09-14 20:17:32 · 9 answers · asked by sahaj yogi 1 in Science & Mathematics ➔ Physics
Electromagnetic induction is the production of an electrical potential difference (or voltage) across a conductor situated in a changing magnetic flux.
Faraday found that the electromotive force (EMF) produced around a closed path is proportional to the rate of change of the magnetic flux through any surface bounded by that path
2006-09-14 20:23:04 · answer #1 · answered by chatgal 2 · 3⤊ 0⤋
(it is allso valid for constant current and magnetic field)
as a changing electric field produces an magnetic field, a changing magnetic field produces an electrical field at proper circumstances. if you have a closed loop a wire say and rotate it or somehaow you change the magnetic flux in it then current due to EMF will be produced.
as Farraday proved in an experiment by appoaching a "core magent" on a coil and measured current as the effect of moving it towards or away from it. to a cetrain extend this is due to concernvation of the state of the systems (imagine something like inertial) that an effect produced in order to cancel out the reason.
meaning that there is EMF that creates a magnetic field that tries to oppose the magnetic field that is causing the EMF....
2006-09-14 20:36:37 · answer #2 · answered by Emmanuel P 3 · 0⤊ 0⤋
EMF is the Eletro Magnetic Force. This is basically the Difference in potential produced from the magnet moving within an Copper winding or Vice Versa. When you move a wire inside a magnet it produces electricity and this is the EMF moving from -/+ theoretically.
2006-09-14 20:29:28 · answer #3 · answered by Snaglefritz 7 · 0⤊ 0⤋
emf full form is electromagnetic force.in the electro magnetic induction with the rate of change of magnetic flux the strength of thie emf vary..it act as a opposing force to this rate of change whicg is actually responsible for its production.
2006-09-14 20:27:47 · answer #4 · answered by krishnendu mukherjee 1 · 0⤊ 0⤋
electro magnetic force.
2006-09-14 20:27:26 · answer #5 · answered by dreamsunltd 3 · 0⤊ 0⤋
electro motive force
2006-09-14 21:49:17 · answer #6 · answered by nacho' 2 · 0⤊ 0⤋
it is electromagnetic force=oxidation no. of anode+reduction no. of cathode [in chemistry]
2006-09-14 20:24:37 · answer #7 · answered by SKY I 2 · 0⤊ 0⤋
electromotive force. it is measured in volts.
is this your home work? in that case:
the inability to study your book is called unmotivated farce. it is measured in dolts.
2006-09-14 20:52:10 · answer #8 · answered by Stand-up Philosopher 5 · 0⤊ 1⤋
(Electro)(magnet)(field)
.
2006-09-14 20:24:54 · answer #9 · answered by Anonymous · 0⤊ 0⤋