1. Lecture 20 – Forces on Currents 26.6 Magnetic Forces on Current Carrying Conductors

2. Magnetic Fields Exert Forces on Currents Magnitude of the force on a current segment of length L perpendicular to a magnetic field Slide 24-37

3. Forces between Currents Slide 24-38 Magnetic force between two parallel current-carrying wires

4. Forces between Current Loops Slide 24-40

5. A Current Loop Acts like a Bar Magnet Slide 24-41

6. Homework due today Problems 24: CQ10, MC33, 22, 25, 26, 29, 31, WB 24: 16-22 Due Wednesday: Read 24: 7-8 Magnetic forces on magnetic dipoles and MRI Problems: 24: 32, 34, 37

7. Magnetic Fields Exert Torques on Current Loops Slide 24-42

8. The Torque on a Dipole in a Magnetic Field Slide 24-43