The current and magnetic field of an ideal solenoid.

Click For Summary
SUMMARY

The discussion clarifies the relationship between current and magnetic fields in an ideal solenoid. Inside an ideal solenoid, the magnetic field direction aligns with the net current flow, meaning they are in the same direction. Additionally, it confirms that in circuit diagrams, current flows from the positive terminal to the negative terminal, with the EMF symbol (ε) representing the source of electromotive force. The magnetic field and current are always at right angles to each other in general scenarios.

PREREQUISITES
  • Understanding of electromagnetic theory
  • Familiarity with solenoid properties
  • Knowledge of circuit diagram conventions
  • Basic concepts of electromotive force (EMF)
NEXT STEPS
  • Study the Biot-Savart Law for magnetic field calculations
  • Learn about Ampère's Law and its applications in solenoids
  • Explore the relationship between current and magnetic fields in different configurations
  • Investigate the concept of electromagnetic induction and Faraday's Law
USEFUL FOR

Physics students, electrical engineers, and anyone interested in understanding the principles of electromagnetism and circuit analysis.

winbacker
Messages
13
Reaction score
0
This is not a homework question, it's just to help my conceptual understanding of two quick things:

Suppose you have an ideal solenoid placed horizontally in front of you. The current is traveling (spiralling) from your left to your right.

What direction is the magnetic field inside the loop going in? In the same direction as the current(to the right), or the opposite direction (or the left)?

In other words, inside an ideal solenoid, are the current and magnetic field in the same direction or opposite direction?

Also
In circuit diagrams, the current always flows from the + terminal to the - terminal right? In some diagrams, the large terminal is replaced by what appears to be a "capital epsilon". The symbol stands for EMF (Electromotive Force). I assume the current begins at the EMF terminal and ends at the other (smaller one?).

If anyone could confirm this info for me it would be a great help.
 
Physics news on Phys.org
The current and the magnetic field are always at right angles to each other.

It is true that the magentic field flows in the same direction as the net current flow, but only in this special case.

For emf see here: http://en.wikipedia.org/wiki/Electromotive_force

Also try to post int the general questions forum if it's not a homework related question!
 

Similar threads

  • · Replies 9 ·
Replies
9
Views
2K
Replies
5
Views
2K
Replies
8
Views
1K
Replies
7
Views
1K
Replies
4
Views
1K
  • · Replies 3 ·
Replies
3
Views
2K
Replies
49
Views
6K
  • · Replies 10 ·
Replies
10
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K