How much charge is stored in the Earth with a surface electric field of 100N/C?

  • Thread starter Thread starter physicmania
  • Start date Start date
AI Thread Summary
The discussion centers on calculating the total charge stored in the Earth, given a surface electric field of 100 N/C directed inward. Participants suggest using the formula for the electric field over a conductor surface, which relates the electric field strength to surface charge density. The Earth's radius is provided as 6.37 x 10^6 m, and the permittivity of free space is noted as 8.85 x 10^-12. The conversation hints that this may be a homework problem, emphasizing the need for proper calculations. Overall, the focus is on applying physics principles to determine the Earth's stored charge based on the specified electric field.
physicmania
Messages
2
Reaction score
0
In fair weather at the surface of the Earth there is an electric field of approximately 100N/C directed toward the Earth (radially inward direction).If the same electric field existed everywhere on the Earth's surface,calculate the total charge that would be stored in the Earth .(E=100N/C , Rearth=6.37*10^6m Eo=8.85*10^-12
 
Physics news on Phys.org
I think this is a homework!
You should look to the electrical field over a conductor surface with a given surface charge.
 
Thanks!
 

Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
View full post »
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 »

Similar threads

Direction of electric field vector on the surface of charged conductor
Replies
9
Views
1K
(Help) Surface charge density (σ) for particle to hit plate...
Replies
4
Views
991
Electric field at a point within a charged circular ring
2
Replies
68
Views
7K
Electric field external to Conducting Hollow Sphere with charge inside
Replies
23
Views
3K
Confused about direction of electric field
Replies
7
Views
3K
I Thought I Understood Gauss' Law (Sheets)
Replies
26
Views
2K
Applying Gauss' Law: Solving Electric Field Problems
Replies
1
Views
2K
Find the electric field between 2 finite discs
Replies
16
Views
1K
Earth's Electric & Gravitational Field: Direction, Shape & Height
Replies
1
Views
1K
What is the electric field on a thin nonconducting shell
Replies
3
Views
2K

Hot Threads

Recent Insights

Back
Top