What exactly is Electric Flux Density?

  • Thread starter iVenky
  • Start date
  • #1
212
12
We define flux density as D= ε E right?
or even ∇.D=ρ

But I can't link the above with what is given in the wiki where they have used the symbol "phi"

http://en.wikipedia.org/wiki/Electric_flux


What is the difference between D and symbol "phi"?

I would be really happy if you could help me as I am new to EMF.

Thanks a lot. :)
 

Answers and Replies

  • #2
834
2
[itex]D[/itex] and [itex]\Phi[/itex] are nothing alike, don't have the same units, don't represent different aspects of the same quantity, nothing. That they share the words "electric flux" in them is simply misleading, but the roots of this terminology are historical, I'm sure.
 
  • #3
212
12
What I read was D is the no of electric lines which seems to be same as [itex]\phi[/itex]. What is the exact physical meaning of D ?

Thanks a lot.
 

Related Threads on What exactly is Electric Flux Density?

  • Last Post
Replies
6
Views
2K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
13
Views
4K
Replies
7
Views
6K
Replies
1
Views
24K
Replies
0
Views
966
  • Last Post
3
Replies
71
Views
14K
Replies
6
Views
11K
  • Last Post
4
Replies
87
Views
24K
Top