What Is the Current in a Rotating Electron Model of a Hydrogen Atom?

  • Thread starter Thread starter coffeem
  • Start date Start date
  • Tags Tags
    Electromagnetism
AI Thread Summary
The discussion revolves around calculating the loop current in a rotating electron model of a hydrogen atom. The user is struggling with part (a) of the problem, which involves estimating the loop current using the formula I = NevA. They express confusion over the formula's components, particularly regarding how to determine the current based on the electron's frequency of rotation. The user seeks clarification on how to correctly apply the formula to find the current, indicating a need for guidance on the underlying concepts. Understanding the relationship between charge, frequency, and current is essential for solving this problem.
coffeem
Messages
91
Reaction score
0
Hi I have tried the question below. However I am failing at the first hurdle part a! Some help and advice would certaintly be appretiated. Thanks

Taking a simple model of the hydrogen atom as an electron rotating around the nucleus in a circle or radius 0.53ee-10m at a frequency of 0.66ee16Hz, estimate:

a) The look current,

b) The magnitude of the dipole-moment of the loop,

c) The magnitude and ridection of the magnetic field at a distance of 2ee-9m, from the center of the loop.


For part (a) I tried using the formula: I = NevA, however this gave me an answer which was many orders of magnitude wrong lol.
 
Physics news on Phys.org
The loop current is just the rate at which charge is a passing a point in the loop. The electron passes every point 0.66E16 times per second. How much current is that? I don't know what the formula I=NevA is referring to.
 
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...
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...
Back
Top