Magnetic Forces Between Wires
Attraction and repulsion produced by currents in parallel conductors
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This
movie is part of the collection:
Show Me The Physics
E) Forces between current carrying wires
| Onsite |
Opposite Currents
Wires repel
Same Current Direction?
Wires Attract
Wires, perpendicular F = 0
| S.M.U. Physics | | Onsite |
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Check Your Understanding
5 quick questions — pick an answer to see if you’re right.
1. Two parallel wires carry currents in the SAME direction. The wires:
2. Two parallel wires carry currents in OPPOSITE directions. The wires:
3. Two current-carrying wires cross each other at a right angle (perpendicular). The magnetic force between them is:
4. Two parallel wires with same-direction currents are attracting. The current in ONE wire is reversed. Now the wires:
5. Why do two current-carrying wires exert forces on each other at all?