a. Describe the RHR for a moving charged particle in a magnetic field. Use sketches and comments.

b.

12. What is the magnetic field B inside the solenoid of this current balance, if the force of gravity on the 0.50 gram mass just provides enough torque to balance the torque due to the magnetic force on the current balance? 15A solenoid T balancing mass 0.50 g balance 25 em -5.3 cm Ial =3.6 A