6C.2 Electric motors Flashcards
1
Q
a motor effect
A
a wire carrying a current, held within a magnetic field, will experience a force
2
Q
a magnetic field can affect
A
electric charges
3
Q
when is the motor rule at its greatest
A
when the magnetic field and the wire are at right angle to each other
4
Q
what is fleming’s left-hand rule
A
the role for determining the direction of the force generated by the motor effect (page 60)
5
Q
if a current is parallel to a magnetic field
A
there will be no force
6
Q
why does the force keep changing directions
A
because as it rotates the current will travel in an opposite direction causing it to rotate back
