PHYSICS 3B Chapter Notes - Chapter 27: Ferromagnetism, Mega-, B Unit
Document Summary
The ampere is defined in terms of the force between two current carrying wires. , which results in a force long parallel wires 7m apart of exactly. 2 10-7 n per meter of length of each wire. Coulomb = me ampere -second lie 1a - b) " ampere "s law relates the magnet-o field around a closed loop to flowing through the area enclosed by the loop fb" We can use amperes law to find the strength finer b field (cid:8869) / - no i enclosed is taken around the edge of the cubed troop around a long straight wire the total current. Use a circular path with the wire at the center. Integral gives : no i = of b" Mlb : b - as we teamed earlier of b - de - at every paint. 21n v ti closed path madeup of segments of ol lkngm) Use symmetry to determine the direction of the field.
