How Do Magnetic Fields Influence Parallel Current-Carrying Wires?

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Homework Help Overview

The discussion revolves around the influence of magnetic fields on parallel current-carrying wires, specifically focusing on the forces acting on a charged particle in the vicinity of these wires. The participants analyze various scenarios involving different current values and their effects on the magnetic field and force experienced by a positive charge.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants present statements regarding the behavior of forces and magnetic fields based on different current configurations. They question the implications of these configurations, particularly regarding the attraction or repulsion of wires and the direction of forces on the charge.

Discussion Status

Some participants have provided reasoning for their statements, while others seek clarification on specific points. There is an ongoing exploration of the relationships between current direction, magnetic field orientation, and the resulting forces, with no clear consensus reached yet.

Contextual Notes

Participants are working within the constraints of the problem statement and the assumptions about current directions and their effects on magnetic fields. There is a focus on understanding the implications of these assumptions without resolving the questions posed.

missyc8
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Homework Statement



In the picture below, the two wires carry current i1 and i2, respectively, with positive current to the right. The charge q is positive and has velocity v to the right.

If i2 = 0 and i1 is greater than zero, then the force on q points into the page.
If i1 = 0 and i2 is greater than zero, then the magnetic field near charge q points into the page.
If i2 = - i1 then the force on q equals zero.
If i1 = 0 and i2 is greater than zero then the force on q is south.
If i1 = - i2, then the wires repel each other.
If i1 is less than i2, then the force on q is south..
If v = 0, then the force on q is zero.


Homework Equations



right hand rule

The Attempt at a Solution


If i2 = 0 and i1 is greater than zero, then the force on q points into the page. T
If i1 = 0 and i2 is greater than zero, then the magnetic field near charge q points into the page. F
If i2 = - i1 then the force on q equals zero.T
If i1 = 0 and i2 is greater than zero then the force on q is south.T
If i1 = - i2, then the wires repel each other.F
If i1 is less than i2, then the force on q is south..T
If v = 0, then the force on q is zero.T
 

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missyc8 said:

Homework Statement



In the picture below, the two wires carry current i1 and i2, respectively, with positive current to the right. The charge q is positive and has velocity v to the right.

If i2 = 0 and i1 is greater than zero, then the force on q points into the page.
If i1 = 0 and i2 is greater than zero, then the magnetic field near charge q points into the page.
If i2 = - i1 then the force on q equals zero.
If i1 = 0 and i2 is greater than zero then the force on q is south.
If i1 = - i2, then the wires repel each other.
If i1 is less than i2, then the force on q is south..
If v = 0, then the force on q is zero.


Homework Equations



right hand rule

The Attempt at a Solution


If i2 = 0 and i1 is greater than zero, then the force on q points into the page. T
If i1 = 0 and i2 is greater than zero, then the magnetic field near charge q points into the page. F
If i2 = - i1 then the force on q equals zero.T
If i1 = 0 and i2 is greater than zero then the force on q is south.T
If i1 = - i2, then the wires repel each other.F
If i1 is less than i2, then the force on q is south..T
If v = 0, then the force on q is zero.T



Could you explain your answers for c) and e) ?

I assume "south" means down as I look at the page, right?
 
yes, south means down the page...

C) true, parallel currents attract each other...?
E)false, because the wires produce a mag. out of page...?
 
missyc8 said:
yes, south means down the page...

C) true, parallel currents attract each other...?
E)false, because the wires produce a mag. out of page...?

Not sure I'm understanding your answers. Could you paste in c) and e) questions, along with your reasoning on each?
 

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