Right Hand Rule Associated Question

[Fizickstudent]

Homework Statement

What will happen to the two wires shown in the diagram (in the attachments)?

A: nothing will happen
B: repel each other
C: attract each other

The answer is "B", they will repel each other.

Homework Equations

The Attempt at a Solution

I thought it would attract because the current in the two wires are coming in from different directions/ sides signifying that the electric fields are not the same, and if the electric fields are different then there must be an attraction.

But that was just my guess, could someone tell me why the two wires repel each other instead of attract each other?

 

[Doc Al]

This is a question about magnetic fields, not electric fields.

Answer these:
(1) What is the magnetic field created by the bottom wire? (Use a right hand rule.)
(2) What force does that magnetic field exert on the top wire? (Use a right hand rule.)