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Electricity and Magnetism

Magnetic Fields Produced by Currents Flowing in two Long Straight Parallel Conductors

Currents Flowing in the Same Sense

 current into plane of diagram

Attraction

Currents Flowing in Opposite Senses

 current out of plane of diagram

Repulsion

Field Produced by two Short Coils (Helmholtz Coils)

© David Hoult 2008