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