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Re: [Phys-l] current vector

I presume you mean discharge not by a wire connecting the concentric spheres, but by a leaky dielectric. In which case you have "crystal clarified" the discussion; thank you.

bc

Fayngold, Moses wrote:

It looks like the disagreement between John Denker and John Mallinckroft
has been caused by interchangeable use of the two different concepts: current
and current density. Current (as a rate of charge transfer through a surface) is not a vector. This can be made crystal clear by considering, say, electrical discharge of a spherical capacitor. We have non-zero charge transfer with no direction to single out.
Current density is a vector, about which, I think, there is no disagreement.
Moses Fayngold,
NJIT


-----Original Message-----
From: phys-l-bounces@carnot.physics.buffalo.edu on behalf of John Mallinckrodt
Sent: Tue 2/21/2006 12:37 PM
To: Forum for Physics Educators
Cc:
Subject: Re: [Phys-l] current vector

John Denker wrote:


On 2/21/06, John Mallinckrodt <ajm@csupomona.edu> wrote:

>While it is true that the notion of current often--as when it flows



cut