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- PHY102 Physics II © Dr.Cem Özdoğan
- All the conduction electrons in this section of wire will drift past plane xx in a time t =L/vd.
- Thus, in that time a charge will pass through that plane that is given by
- Here L is a length vector that has magnitude L and is directed along the wire segment in the direction of the (conventional) current.
- If a wire is not straight or the field is not uniform, we can imagine the wire broken up into small straight segments.
- The force on the wire as a whole is then the vector sum of all the forces on the segments that make it up.
- In the differential limit, we can write and we can find the resultant force on any given arrangement of currents by integrating Eq. 28-28 over that arrangement.
- Consider a length L of the wire in the figure.
- 28-8 Magnetic Force on a Current-Carrying Wire