CK-12-Physics-Concepts - Intermediate

http://www.ck12.org Chapter 20. Magnetic Fields

a. up

b. down

c. left

d. right

e. None of these.

2. Which way will the coil spin when current passes through the wire?

a. clockwise

b. counterclockwise

• electric motor:An electricmotor converts electricity into mechanical motion.


• commutator:A split - ring commutator (sometimes just called a commutator) is a simple and clever device
  for reversing the current direction through an armature every half turn.


• armature:A revolving structure in an electric motor or generator, wound with the coils that carry the current.