Assertion: direct current's frequency | /r/HasProperty | measured in cycles per second
Facets:
value: commonly
type: TEMPORAL
Source sentences:
text: Direct current (dc) flows only in one direction and alternating current (ac) flows alternately forwards and backwards, also varying its amplitude to a peak and returning to zero, at a definite frequency measured in cycles per second.
text: For standard measurements, the period of time is one second, so the frequency of the wave is commonly measured in cycles per second (cycles/sec) and, in normal usage, is expressed in units of Hertz (Hz).