Calculating RC-Constant of Coaxial Cable

AI Thread Summary
To calculate the RC constant of a coaxial cable, it is important to use half of the measured resistance value. This is due to the behavior of electrons within the cable, where the effective resistance encountered during charging and discharging is halved. Understanding this concept is crucial for accurate calculations in experiments involving coaxial cables. Clarification on the relationship between resistance and electron flow can enhance comprehension of the RC constant. Proper application of these principles is essential for successful experimentation.
electricman
Messages
14
Reaction score
0
Hi,

I am doing an experiment with a coaxial cable and i want to Count out it expected RC-constant for the cable.

I have measured the resistance for the cable, but when i count the RC, the resistansen that will be used only is the half of it resistans measured in the beginning.

Why should i use the half resistance?

Additional Details

I think it has something to do with the electrons, or?
 
Physics news on Phys.org
Isn´t there anyone who can explain this?
 
I'm sorry, but I can't even understand what you're saying.

- Warren
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
View full post »
Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

Surface Charges on a Coaxial Cable
Replies
1
Views
2K
Magnetic energy density, self-inductance of coaxial cylindrical shells
Replies
10
Views
1K
Calculating Resistance of Coaxial Cable with Isolator
Replies
5
Views
2K
Resistance, current and current density
Replies
8
Views
2K
Maximum Length for Coaxial Cable in a 100 ns Noise Transfer Scenario
Replies
7
Views
4K
Electric field of a coaxial cable
Replies
1
Views
3K
Length of coaxial cable, based on signal reflection
Replies
4
Views
3K
What is the electric field inside a coaxial cable with given charge densities?
Replies
7
Views
7K
Magnetic energy density, and pressure due to magnetic force
Replies
23
Views
4K
Magnetic Forces in and around a coaxial cable
Replies
6
Views
3K

Hot Threads

Recent Insights

Back
Top