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# CCEA Weber Definition Tweet

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1. CCEA Weber Definition
Does anybody know how the Weber is defined for CCEA A2 Physics? The spec says we need to know it but I can't find it anywhere in my notes.
2. Re: CCEA Weber Definition
It should be defined the same way as anywhere else, I would hope

"The weber is the magnetic flux which induces an emf of one volt in a coil of one turn when the flux is reduced uniformly to zero in one second."

(Or some similar equivalent wording expressing the same idea. It's based on Faraday's Law.)
3. Re: CCEA Weber Definition
(Original post by Stonebridge)
It should be defined the same way as anywhere else, I would hope

"The weber is the magnetic flux which induces an emf of one volt in a coil of one turn when the flux is reduced uniformly to zero in one second."

(Or some similar equivalent wording expressing the same idea. It's based on Faraday's Law.)
Thanks
4. Re: CCEA Weber Definition
For OCR anyway - the weber is based on the definition of magnetic flux.

1 Weber is the magnetic flux when there is a magnetic flux density of 1 Tesla perpendicular to a coil of area 1 m^2.

ie 1Wb = 1T x 1m^2.

(of course this comes to the same thing given the definitions of the Tesla and the Volt)
Last edited by teachercol; 23-05-2012 at 09:42.
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