1. Quick Practice In what direction is the magnetic force on the wire?

2. Magnetism from Electricity Electric current induces a magnetic field

3. Right-hand Rule #2

4. Practice Using and, draw the magnetic field at various locations to the left and to the right of the wire.

5. Practice Determine the direction of the force on each charge near the wire.

6. When two current-carrying wires are placed together, they exert magnetic forces on each other. Using the two RHR, explain why the two wires are attracted to each other.

8. Magnetic Field of a Current Loop Draw the magnetic field lines around the current loop

9. Practice What happens when the two current loops are placed next to each other?

10. Solenoids solenoid = a long, helically wound coil of insulated wire Two ways to increase the strength of the magnetic field of a solenoid: (1) _____________ (2) _______________