Chapter 9: Magnetic Forces, Materials, and Inductance

Quiz

1. The net force on a charged particle subject to electric and magnetic fields may be zero under the following condition

Never

If the particle is at rest

If the magnetic field is in the direction of the particle's velocity

If the magnetic field is perpendicular to the direction of the particle's velocity



2. The residual magnetism left in certain magnetic materials when an external magnetic field is removed leads to the phenomenon of

Paramagnetism

Ferromagnetism

Hysteresis

Ferrimagnetism



3. The equivalent of Ohm's Law for a magnetic circuit is



4. The inductance of a coil with no magnetic core does NOT depend on

Number of turns

Current

Ratio of flux to current

Depends on all of these