How are ac and dc generators different?
in dc generators, commutators produce direct current.
in ac generators, no commutators or slip rings are used.
in dc generators, slip rings produce direct current.
in ac generators, commutators produce alternating current.

The current in a hair dryer measures 11 amps. the resistance of the hair dryer is 12 ohms. what is the voltage?unit:

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.

Which levels of government establish and implement educational requirements for minors