4.4 Conductors In Magnetic Fields Flashcards
1
Q
What creates a magnetic field?
A
A moving charge. If the charged particle passes through an external magnetic field the two fields may interact to produce a force on the particle.
2
Q
What does a split ring commutator do?
A
Alternates the direct current every half turn (180 degrees)
3
Q
Motor effect
A
The interaction between a current carrying wire and an external magnetic field. Was used to invent the electric motor.
