Flux density and Divergence of Electric field

AI Thread Summary
Flux density is defined as the amount of electric flux passing through a unit area, while divergence measures the rate at which electric field lines spread out from a point in space. The discussion clarifies that flux density can be understood as electric field per unit area vector. Divergence is specifically defined as flux per unit volume, indicating a distinction between the two concepts. Overall, the participants agree that flux density and the divergence of the electric field are different quantities.
Shreya
Messages
187
Reaction score
64
Homework Statement
Is flux density same as divergence of electric field
Relevant Equations
Div E = (lim as V tends to zero) of (1/V) E*dS
V is volume
I think Flux density is flux/Volume.
Or is it flux/ Area
Please be kind to help
 
Physics news on Phys.org
Divergence is defined as flux per unit volume.
 
Thanks a lot, Gordianus!
Gordianus said:
Divergence is defined as flux per unit volume
I think flux density is electric field / unit area vector...
So flux density and divergence of E are different,right?
 
Last edited:
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
View full post »

Thread 'Egg Drop Challenge! Need ideas for winning designs'

I was thinking using 2 purple mattress samples, and taping them together, I do want other ideas though, the main guidelines are; Must have a volume LESS than 1600 cubic centimeters, and CAN'T exceed 25 cm in ANY direction. Must be LESS than 1 kg. NO parachutes. NO glue or Tape can touch the egg. MUST be able to take egg out in less than 1 minute. Grade A large eggs will be used.
View full post »

Similar threads

No Electric Charges if No Electric Field in Region
Replies
22
Views
2K
Flux through a cylindrical surface enclosing part of a sphere
Replies
9
Views
548
Electric flux through an inclined cylinder
Replies
16
Views
1K
Induction heat flux density induced by wire in a slab
Replies
0
Views
815
A (nonconservative) electric field is induced in any region in which...
Replies
11
Views
1K
If closed integral of E.dS is zero over a surface, then...?
Replies
14
Views
885
Flux of Electric field through sphere
Replies
2
Views
2K
Flux linking (and de-linking?)
Replies
6
Views
870
Is the magnetic flux density B constant?
Replies
6
Views
2K
Is Electric Flux Through a Half Sphere Zero According to Gauss' Law?
Replies
20
Views
4K

Hot Threads

Recent Insights

Back
Top