Alternating current review 1

(a)   current is defined as current that periodically changes direction and continuously changes in magnitude

the waveform of alternating current produced by a rotating generator is called a (a)   wave

A (a)   is one complete sequence of voltage or current changes from zero to a positive peak, to zero then through a negative peak, then back to zero

the number of cycles occurring per second is the _______ of the current and is measured in a unit called ______

(a)  

the (a)   of an alternating current or a voltage is the angular distance it has moved from 0 degrees in a positive direction

the (a)   is the difference in degrees of rotation between 2 alternating currents or voltages, or between a voltage and a current

an (a)   is one half of an AC cycle

the time required for one cycle of events to occur is known as the (a)   of alternating current

the number of complete cycles per second is the _____ of AC and is expressed in ______

(a)  

the frequency of commercial current in North America is (a)   hertz