PHYS 1750: SELECTED TOPICS in PHYSICS
LECTURE 33. Magnetic Forces on Currents
21.7-8. | Force on Currents | ||
1. | F/L = B*I*sin(θ B-I) | ||
2. | Torque = B*I*A*sin(θ B-A⊥) | ||
21.9. | Field from a Current | ||
1. | Ampere's law: B*2π*r = μo*I | ||
2. | B = μo*I /2π*r | ||
μo = 4π x 10-7 T*m/A permeability | |||
21.10. | Parallel Wires and Loops | ||
1. | F/L = μo I1I2 /2π*d | ||
2. | Loops and solenoids: B = μo*N*I/L | ||
21.2. | Magnetic Materials | ||
1. | Little loops | ||
2. | Why there are no monopoles |