Are the Current Directions and Poles Correct in These Electrical Diagrams?

  • Thread starter Thread starter Manaphy180
  • Start date Start date
  • Tags Tags
    Electrical
AI Thread Summary
The discussion focuses on the correctness of current directions and magnetic poles in two electrical diagrams. The first diagram is generally accepted as correct, while the second diagram raises confusion regarding the current flow and pole labeling. Participants emphasize that current is conventionally considered to flow from positive to negative, which affects the understanding of electromagnetism. Clarifications about the relationship between magnetic fields and the direction of current are provided, with a consensus that the magnetic field still flows from the North to South pole. Overall, the conversation highlights the importance of correctly applying the right-hand rule in analyzing electrical diagrams.
Manaphy180
Messages
6
Reaction score
0
Hi, I have two questions that I want to solve correctly... and help is a appreciated.

1. Is the current direction/Poles on right figure correct? https://www.dropbox.com/s/bs3lvak4wda5lqu/23.png

2. This one I'm sure is wrong... not too sure what I'm doing here... Are the currents correct at all? Poles, arrows were added by me https://www.dropbox.com/s/24iecu3bm6grlq7/25.png

Thanks in advance, If I could get insight or answers ASAP that would be great :D
 
Physics news on Phys.org
jedishrfu said:
Check out this wiki article on the right hand rule and apply it to your problem:

http://en.wikipedia.org/wiki/Righthand_rule

midway down is the rules for current and north pole

You're right, I totally forgot about that, Thanks. Do you have any insight into the second question?
 
Last edited:
current goes from -ve to +ve
there s a rule for working out the force on a current carrying wire in a magnetic field.
 
Using the rule it appears that you've labeled the poles correctly. I am not sure about the cylinder thing. Are you trying to draw an electric motor schematic?
 
jedishrfu said:
Using the rule it appears that you've labeled the poles correctly. I am not sure about the cylinder thing. Are you trying to draw an electric motor schematic?

Sorry, I should have mentioned that it's a magnet with coil wrapped around it. Would the North to South Pole direction change?
 
Thanks guys, I suppose my real question is about the electromagnetic pole from the North to South pole that acts on the object between. Does it still go from North to South, or does the wire along the magnet interfere with that?
 
  • #10
I think it still go from north to south, just like ordinary U shaped magnet...
 
  • #11
So the diagram I drew for my 2nd question was correct? I really want to know that I'm doing this right before I get into it. Thanks
 
  • #12
I just understand the electromagnet, I don't understand what is between the magnet in your picture sir..
As I know, magnetic field come from the north pole to the south pole...one direction, no way back
 
  • #13
Simon Bridge said:
current goes from -ve to +ve
It shouldn't.
 
  • #14
Manaphy180 said:
So the diagram I drew for my 2nd question was correct? I really want to know that I'm doing this right before I get into it. Thanks
No, it's not correct.

What are all those arrows you've drawn on the wire?
 
  • #15
NascentOxygen said:
It shouldn't.
I was answering another thread with a different diagram it seems.
 
  • #16
Simon Bridge said:
I was answering another thread with a different diagram it seems.

Don't you just hate that, when you get cross-threaded? :wink:

There exist circuits where current goes from - to + ? Where can I find one?
 
  • #17
NascentOxygen said:
There exist circuits where current goes from - to + ? Where can I find one?
Conventional current?
I don't think so
 
  • #18
NascentOxygen said:
There exist circuits where current goes from - to + ? Where can I find one?

In that thread Simon was referring to.. :wink:
 
Back
Top