Two very long, parallel conducting wires carry equal currents in the same direction, as shown. The numbered diagrams show end views of the wires and the resultant force vectors due to current flow in each wire. Which diagram best represents the direction of the forces?
A) 1
B) 2
C) 3
D) 4
E) 5

Question

Two very long, parallel conducting wires carry equal currents in the same direction, as shown. The numbered diagrams show end views of the wires and the resultant force vectors due to current flow in each wire. Which diagram best represents the direction of the forces?
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Quizplus · Accepted Answer

According to the right-hand rule, the direction of the magnetic field due to current flowing in the two wires will be opposite to each other. Hence, the force on the wires will also be in opposite directions. Therefore, option B is the correct representation of the direction of forces.

Two Very Long, Parallel Conducting Wires Carry Equal Currents in the Same