Current produced by rev of electron

  • Thread starter kanki
  • Start date
  • #1
29
0
I'm having a bit difficulty in understanding this question...
In a Hydrogen aton, an electron goes round the proton at a rate of 7 x 10^5 rev/s in a circular orbit of radius 5.0 x 10^-11
What is the current produced by the revolution of electron?

Well, the formula for current is Q/t and Ne/t. I don't know how to convert the angular velocity to current. Please help!
 

Answers and Replies

  • #2
ZapperZ
Staff Emeritus
Science Advisor
Education Advisor
Insights Author
35,977
4,678
kanki said:
I'm having a bit difficulty in understanding this question...
In a Hydrogen aton, an electron goes round the proton at a rate of 7 x 10^5 rev/s in a circular orbit of radius 5.0 x 10^-11
What is the current produced by the revolution of electron?

Well, the formula for current is Q/t and Ne/t. I don't know how to convert the angular velocity to current. Please help!

1. If you look at a point along the electron's "orbit", how many times does the electron passes through that point in a second?

2. If an electron has a charge e, from your answer to (1), how much charge has passed through that point per second?

3. Oh wait, what you now have is...... look at that! You have "amount of charge passing through per second"! This is current!

Zz.
 
  • #3
29
0
Oh then i just have to use the number of revolutions per second.
The electron passes through the point 7 x 10^5 times in a second, so the amount of charge, Q is equal to 7 x 10^5 times the charge e in a second?
And that's the answer?
 
  • #4
ZapperZ
Staff Emeritus
Science Advisor
Education Advisor
Insights Author
35,977
4,678
kanki said:
Oh then i just have to use the number of revolutions per second.
The electron passes through the point 7 x 10^5 times in a second, so the amount of charge, Q is equal to 7 x 10^5 times the charge e in a second?
And that's the answer?

It should be, unless it wants current density or something I'm not noticing.

Zz.
 

Related Threads on Current produced by rev of electron

Replies
7
Views
7K
  • Last Post
Replies
8
Views
751
  • Last Post
Replies
4
Views
2K
  • Last Post
Replies
11
Views
666
Replies
1
Views
1K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
2
Views
5K
Replies
16
Views
917
Replies
13
Views
2K
  • Last Post
Replies
4
Views
12K
Top